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-   -   **Diagnostic Trouble Codes** (http://www.s10forum.com/forum/f107/diagnostic-trouble-codes-198381/)

Blazee 08-05-2005 06:13 PM

**Diagnostic Trouble Codes**
 
Accessing Trouble Codes

Turn ignition switch to OFF position
Locate the Assembly Line Data Link (ALDL), see image below.
Jumper the A&B terminals(a paper clip or a jumper wire work ok)
Turn Ignition switch to ON position.
Count the flashes on the "CHECK ENGINE" or "SERVICE ENGINE" light.
FLASH, pause, FLASH, FLASH = code 12
NOTE: Some 94 & 95 models do not have the B terminal. In which case a scanner is required.
NOTE: Some 94 & 95 models that DO have the A & B terminals still require a scanner.
All vehicles after 96 are OBDII, and require a scanner to access them.




12 Pin ALDL

http://files.automotiveforums.com/ga.../279217OBD.jpg

A - Ground
B - Test Terminal
C - Air Injection
E - Serial Data
F - TCC
G - Fuel Pump
H - Brake Sense Speed Input
M - Serial Data



Clearing Trouble Codes
Diagnostic trouble codes may be cleared by disconnecting the battery ground cable for at least 20 seconds. Reconnect negative battery cable and recheck codes to confirm the repair. OBDII can also be reset with a scanner.




OBDI Codes

4.3L VIN Z and W


12 – Diagnostic mode

13 - Oxygen sensor circuit - Oxygen sensor voltage stays between 0.35 and 0.55 volts for 30 seconds when the TPS signal was above 0.55 volts. The engine had been running for at least 40 seconds with an engine temperature above 110? F.

14 - Coolant temperature sensor or circuit/ high temperature indicated - Coolant temperature sensor signal indicates a temperature of over 284? F for 4 seconds after the engine had been running for at least 10 seconds.

15 - Coolant temperature sensor or circuit/ low temperature indicated - Coolant temperature sensor signal indicates a temperature colder than -36? F for at least 4 seconds after the engine had been running for 2 seconds.

16 – System voltage high - Charging system voltage was either below 9 volts or above 17 volts for 10 seconds.

17 – Crank Signal Circuit - PCM did not detect any spark reference pulses within 240 fuel control reference pulses (80 crank revolutions) while engine was running below 1200 RPM.

19 – Crankshaft Position Sensor or circuit

21 – Throttle Position Sensor TPS or circuit voltage high - TPS voltage was above 0.8 volts for 5 seconds when engine was running and air flow was less than 15 gm /sec, or the TPS voltage was over 4.8 volts at any time.

22 – Throttle Position Sensor TPS or circuit voltage low - TPS voltage was under 0.2 volts for 4 seconds when the ignition was on.

23 – Intake Air Temperature (IAT) sensor circuit – low temperature indicated - Inlet air temperature sensor signal showed an air temperature of -29? F for 4 seconds.

24 - Vehicle Speed sensor circuit - Vehicle speed sensor signal showed less than 3 MPH for 2 seconds when engine speed was greater than 3000 RPM and transmission has not been in park or neutral for more than 4 seconds. Or vehicle speed goes from above 18 MPH to 0 in less than 2 seconds without applying brake.

25 – Intake Air Temperature (IAT) sensor or circuit – high temperature indicated - Inlet air temperature sensor signal showed an air temperature of over 218? F for 5 seconds when vehicle speed was greater than 35 MPH.

26 - Quad-Driver sense voltage shows a low voltage when battery voltage should be present, or if the sense voltage shows battery voltage when a low voltage should be present for at least 5 seconds when the engine was running.

27 - 2nd gear switch was closed or grounded for 10 seconds when vehicle was in 4th gear, or 2nd or 4th gear switch was open when engine was first started.

28 - 3rd gear switch was closed or grounded for 10 seconds when vehicle was in 4th gear, or 3rd or 4th gear switch was open when engine was first started.

29 - 4th gear switch was closed or grounded for 10 seconds when vehicle was in 4th gear, or 4th gear switch was open when engine was first started.

31 - Park/Neutral Position (PNP) switch circuit - PRNDL indicates a gear other than park or neutral for 13 seconds for 3 consecutive startups when ignition was on, engine was off and vehicle speed was 0. Or the PRNDL status indicators (A, B, C, P) showed an incorrect combination of Lo and Hi for more than 10 seconds.

32 - Exhaust Gas Recirculation (EGR) Circuit - EGR open command did not change the fuel mixture when the command was given during off idle operation. EGR opening should cause the mixture to be slightly richer because of the low oxygen content of exhaust gas.

33 - MAP sensor signal voltage was too high (low vacuum) for 5 seconds when throttle opening was under 2%.

34 - MAP sensor signal voltage low - MAP sensor signal voltage was too low (high vacuum) when engine speed was over 1200 RPM, or the throttle angle was above 21% when engine speed was over 1200 RPM.

35 - Idle Air Control (IAC) System

38 – Brake Switch

41 – Camshaft Sensor Circuit

42 – Bypass or Electronic Spark Timing circuit - The EST signal did not change when the ECM applied bypass voltage to the ignition module.

43 – Knock Sensor Ciruit - Knock sensor signal was either above 3.5 volts or below 1.5 volts for at least 20 seconds.

44 - Oxygen sensor or circuit – lean exhaust detected. - Oxygen sensor voltage was under 0.25 volts for up to 4 1/2 minutes of closed loop operation.

45 - Oxygen sensor or circuit - rich exhaust detected. - Oxygen sensor voltage was over 0.750 volts for 2 minutes in closed loop operation with a throttle angle between 0.6 and 1.9 volts.

46 – Power Steering Pressure Switch circuit

47 - Momentary loss of power to Body Computer Module (BCM).

48 – Misfire Diagnosis

51 - MEM-CAL, PROM, or ECM Error (Faulty or Incorrect Calibration)

52 – CALPAK or ECM problem

53 – System over-voltage – ECM over 17.7 volts

54 – Fuel Pump Circuit

55 - ECM problem



2.8 VIN R

13 - Oxygen Sensor Open Circuit Open circuit

14 - Coolant Temperature Sensor Circuit High temp indicated

15 - Coolant Temperature Sensor Circuit Low Temp indicated

21 - Throttle Position Sensor (TPS) Circuit (Signal Voltage High)

22 - Throttle Position Sensor (TPS) Circuit (Signal Voltage Low)

24 - VSS Circuit Fault

32 - EGR System Failure

33 - MAP Sensor Circuit Signal Voltage High (Low Vacuum)

34 - MAP Sensor Circuit Signal Voltage Low (High Vacuum)

42 - Electronic Spark Timing (EST)

43 - Electronic Spark Control (ESC) Circuit

44 - Lean Exhaust Indicated

45 - Rich Exhaust Indicated

51 - FAULTY MEM-CAL OR PROM PROBLEM

52 - FUEL CALPAK MISSING

53 - VOLTAGE AT ECM TERMINAL B1 IS GREATER THAN 17.1 VOLTS FOR 2 SECONDS.

54 - Fuel Pump Circuit (Low Voltage)

55 - FAULTY ECM



2.2L VIN 4

13 - Oxygen Sensor Open Circuit Open circuit - Oxygen sensor voltage stays between 0.35 and 0.55 volts for 20 seconds. Engine was at normal operating temperature and had been running for at least 2 minutes after start with a throttle angle above 6%.

14 - Coolant Temperature Sensor Circuit High temp indicated - Coolant temperature sensor signal indicates a temperature above 285? F after the engine has been running for at least 2 minutes.

15 - Coolant Temperature Sensor Circuit Low Temp indicated - Coolant temperature sensor signal indicates a temperature colder than -38? F after the engine has been running for at least 1 minute.

21 - Throttle Position Sensor (TPS) Circuit (Signal Voltage High) - TPS voltage was above 3.9 volts for 5 seconds when the MAP sensor signal showed manifold vacuum to be 15 pounds or more and engine speed was less than 1750 RPM or TPS voltage was below 1.9 volts for 64 seconds.

22 - Throttle Position Sensor (TPS) Circuit (Signal Voltage Low) - TPS voltage was under 0.21 volts for 5 seconds when the engine was running.

23 – Intake Air Temperature (IAT) sensor circuit – low temperature indicated - Inlet Air Temperature Sensor signal showed an air temperature below -30? F or above 302? F for more than 2 seconds after the engine has been running for 2 minutes.

24 - VSS Circuit Fault - Vehicle speed sensor signal showed less than 3 MPH for 2 seconds when engine speed was greater than 3000 RPM and transmission has not been in park or neutral for more than 4 seconds. Or vehicle speed goes from above 18 MPH to 0 in less than 2 seconds without applying brake.

25 – Intake Air Temperature (IAT) sensor circuit – high temperature indicated - Inlet Air Temperature Sensor signal showed an air temperature over 304? F after the engine has been running for 5 minutes and 20 seconds and the vehicle speed was greater than 15 MPH.

26 – Quad Module Driver Circuit - Quad-Driver sense voltage shows a low voltage when battery should be present or the sense voltage shows battery voltage when a low voltage should be present for at least 20 seconds.

27 – Quad Module Driver Circuit - Quad-Driver sense voltage shows a low voltage when battery should be present or the sense voltage shows battery voltage when a low voltage should be present for at least 20 seconds.


28 – Quad Module Driver Circuit - Quad-Driver sense voltage shows a low voltage when battery should be present or the sense voltage shows battery voltage when a low voltage should be present for at least 20 seconds.


29 – Quad Module Driver Circuit - Quad-Driver sense voltage shows a low voltage when battery should be present or the sense voltage shows battery voltage when a low voltage should be present for at least 20 seconds.

32 - EGR System Failure - EGR open command did not change the fuel mixture when the command was given during off idle operation. EGR opening should cause the mixture to be slightly richer because of the low oxygen content of exhaust gas.

33 - MAP Sensor Circuit Signal Voltage High (Low Vacuum) - MAP sensor signal voltage was too high for 10 seconds when throttle opening was under 12%.

34 - MAP Sensor Circuit Signal Voltage Low (High Vacuum) - When engine speed was between 1700 and 3600 RPM and throttle position angle was less than 1%, the MAP signal showed low voltage (high manifold vacuum) for at least 5 seconds.

43 - Electronic Spark Control (ESC) Circuit - The ECM did not detect a knock signal during near wide open throttle operation, or the knock signal was present for 3.5 seconds or more during normal engine operation.

44 - Lean Exhaust Indicated - Oxygen sensor voltage was under 0.3 volts for 50 seconds of closed loop operation. Throttle angle was above 5%.

45 - Rich Exhaust Indicated - Oxygen sensor voltage was over 0.700 volts for at least 51 seconds of closed loop operation. Throttle angle was above 5% and engine had been running for at least 2 minutes.

51 - FAULTY MEM-CAL OR PROM PROBLEM

53 – System Over-Voltage - Battery voltage was higher than 17.1 volts for 0.2 seconds, or below 10 volts for 4 minutes.

54 - Fuel Pump Circuit (Low Voltage)

55 – Fuel Lean Monitor - Oxygen sensor voltage was less than 0.3 volts for 5 seconds of closed loop operation.

66 – A/C Pressure Switch or Circuit - A/C refrigerant pressure voltage was either less than 0.19 volts or greater than 4.9 volts for 15 seconds, or the pressure voltage was above 4.0 volts when A/C clutch was not requested.

Blazee 08-05-2005 06:17 PM

Re: **Diagnostic Trouble Codes**
 
OBDII Codes


P0001 - Fuel Volume Regulator Control Circuit/Open
P0002 - Fuel Volume Regulator Control Circuit Range/Performance
P0003 - Fuel Volume Regulator Control Circuit Low
P0004 - Fuel Volume Regulator Control Circuit High
P0005 - Fuel Shutoff Valve "A" Control Circuit/Open
P0006 - Fuel Shutoff Valve "A" Control Circuit Low
P0007 - Fuel Shutoff Valve "A" Control Circuit High
P0008 - Engine Positions System Performance Bank 1
P0009 - Engine Position System Performance Bank 2
P0010 - "A"Camshaft Position Actuator Circuit Bank 1
P0011 - "A" Camshaft Position - Timing Over - Advanced or System Performance Bank 1
P0012 - "A" Camshaft Position - Time Over - Retarded Bank 1
P0013 - "B" Camshaft Position - Actuator Circuit Bank 1
P0014 - "B" Camshaft Position - Timing Over - Advanced or System Performance Bank 1
P0015 - "B" Camshaft Position - Timing Over - Retarded Bank 1
P0016 - Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A
P0017 - Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor B
P0018 - Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor A
P0019 - Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor B
P0020 - "A" Camshaft Position Actuator Circuit Bank 2
P0021 - "A" Camshaft Position - Timing Over - Advanced or System Performance Bank 2
P0022 - "A" Camshaft Position - Timing Over - Retarded Bank 2
P0023 - "B" Camshaft Position - Actuator Circuit Bank 2
P0024 - "B" Camshaft Position - Timing Over - Advanced or System Performance Bank 2
P0025 - "B" Camshaft Position - Timing Over - Retarded Bank 2
P0026 - Intake Valve Control Solenoid Circuit Range/Performance Bank 1
P0027 - Exhaust Valve Control solenoid Circuit Range/Performance Bank 1
P0028 - Intake valve Control Solenoid Circuit Range/Performance Bank 2
P0029 - Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2
P0030 - HO2S Heater Control Circuit Bank 1 Sensor 1
P0031 - HO2S Heater Circuit Low Voltage Bank 1 Sensor 1
P0032 - HO2S Heater Circuit High Voltage Bank 1 Sensor 1
P0033 - Turbo Charger Bypass Valve Control Circuit
P0034 - Turbo Charger Bypass Valve Control Circuit Low
P0035 - Turbo Charger Bypass Valve Control Circuit High
P0036 - HO2S Heater Control Circuit Bank 1 Sensor 2
P0037 - HO2S Heater Circuit Low Voltage Bank 1 Sensor 2
P0037 - HO2S Heater Control Circuit Low Bank 1 Sensor 2
P0038 - HO2S Heater Control Circuit High Bank 1 Sensor 2
P0039 - Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
P0040 - O2 Sensor Signals Swapped Bank 1 Sensor /Bank 2 Sensor 1
P0043 - HO2S Heater Control Circuit Low (bank 1, sensor 3)
P0044 - HO2S Heater Control Circuit High (bank 1, sensor 3)
P0050 - HO2S Heater Control Circuit Bank 2 Sensor 1
P0051 - HO2S Heater Control Circuit Low Bank 2 Sensor 1
P0052 - HO2S Heater Control Circuit High Bank 2 Sensor 1
P0053 - HO2S Heater Resistance Bank 1 Sensor 1
P0054 - HO2S Heater Resistance Bank 1 Sensor 2
P0055 - HO2S Heater Resistance Bank 1 Sensor 3
P0056 - HO2S Heater Control Circuit Bank 2 Sensor 2
P0057 - HO2S Heater Conrol Circuit Low Bank 2 Sensor 2
P0058 - HO2S Heater Control Circuit High Bank 2 Sensor 2
P0059 - HO2S Heater Resistance Bank 2 Sensor 1
P0060 - HO2S Heater Resistance Bank 2 Sensor 2
P0061 - HO2S Heater Resistance Bank 2 Sensor 3
P0062 - HO2S Heater Control Circuit Bank 2 Sensor 3
P0063 - HO2S Heater Control Circuit Low Bank 2 Sensor 3
P0064 - HO2S Heater Control Circuit Low Bank 2 Sensor 3
P0065 - Air Assisted Injector Control Range/Performance
P0066 - Air Assisted Injector Control Circuit or Circuit Low
P0067 - Air Assisted Injector Control Circuit High
P0068 - MAP/MAF - Throttle Position Correlation
P0069 - Manifold Absolute Pressure - Barometric Pressure Correlation
P0070 - Ambient Air Temperature Sensor Circuit
P0071 - Ambient Air Temperature Sensor Range/Performance
P0072 - Ambient Air Temperature Sensor Circuit Low
P0073 - Ambient Air Temperature Sensor Circuit High
P0074 - Ambient Air Temperature Sensor Intermittent
P0075 - Intake Valve Control Solenoid Circuit Bank 1
P0076 - Intake valve Control Solenoid Circuit Low Bank 1
P0077 - Intake Valve Control Solenoid Circuit High Bank 1
P0078 - Exhaust Valve Control Solenoid Circuit Bank 1
P0079 - Exhaust Valve Control Solenoid Circuit Low Bank 1
P0080 - Exhaust Valve Control Solenoid Circuit High Bank 1
P0081 - Intake Valve Control Solenoid Circuit Bank 2
P0082 - Intake Valve Control Solenoid Circuit Low Bank 2
P0083 - Intake Valve Control Solenoid Circuit High Bank 2
P0084 - Exhaust Valve Control Solenoid Circuit Bank 2
P0085 - Exhaust Valve Control Solenoid Circuit Low Bank 2
P0086 - Exhaust Valve Contrtol Solenoid Circuit High Bank 2
P0087 - Fuel Rail/System Pressure - Too Low
P0088 - Fuel Rail/System Pressure - Too High
P0089 - Fuel Pressure Regulator 1 Performance
P0090 - Fuel Pressure Regulator 1 Control Circuit
P0091 - Fuel Pressure Regulator 1 Control Circuit Low
P0092 - Fuel Pressure Regulator 1 Control Circuit High
P0093 - Fuel System Leak Detected - Large Leak
P0094 - Fuel System Leak Detected - Small Leak
P0095 - Intake Air Temperature Sensor 2 Circuit
P0096 - Intake Air Temperature Sensor 2 Circuit Range/Performance
P0097 - Intake Air Temperature Sensor 2 Circuit Low
P0098 - Intake Air Temperature Sensor 2 Circuit High
P0099 - Intake Air Temperature Sensor 2 Circuit Intermittent/Erratic
P0100 - MAF Sensor Circuit Insufficient Activity
P0101 - Mass Air Flow System Performance
P0102 - Mass Air Flow Sensor Circuit Low Frequency
P0103 - Mass Air Flow Sensor Circuit High Frequency
P0104 - Mass Air Flow Circuit Intermittent
P0105 - Manifold Absolute Pressure Sensor Circuit Insufficient Activity
P0106 - Manifold Absolute Pressure System Performance
P0107 - Manifold Absolute Pressure [MAP] Sensor Circuit Low Voltage
P0108 - Manifold Absolute Pressure [MAP] Sensor Circuit High Voltage
P0109 - Manifold Absolute Pressure Circuit Intermittent
P0110 - Intake Air Temperature Circuit
P0111 - Intake Air Temperature Circuit Range/Performance
P0112 - Intake Air Temperature [IAT] Sensor Circuit Low Voltage
P0113 - Intake Air Temperature [IAT] Sensor Circuit High Voltage
P0114 - Intake Air Temperature Circuit Intermittent
P0115 - ECT Sensor Circuit
P0115 - Engine Coolant Temperature Sensor Circuit
P0116 - Engine Coolant Temperature Sensor Circuit Performance
P0117 - Engine Coolant Temperature [ECT] Sensor Circuit Low Voltage
P0118 - Engine Coolant Temperature [ECT] Sensor Circuit High Voltage
P0119 - Engine Coolant Temperature Circuit Intermittent
P0120 - Throttle Position [TP] Sensor Circuit
P0121 - Throttle Position Sensor A Circuit Range/Performance
P0122 - Throttle Position Sensor Circuit Low Voltage
P0123 - Throttle Position Sensor Circuit High Voltage
P0124 - Throttle Position Sensor A Intermittent
P0125 - Engine Coolant Temperature [ECT] Excessive Time To Closed Loop Fuel Control
P0126 - Insufficent Engine Coolant Temperature for Stable Operation
P0127 - Intake Air Temperature Too High
P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
P0130 - HO2S Circuit Bank 1 Sensor 1
P0131 - HO2S Circuit Low Voltage Bank 1 Sensor 1
P0132 - HO2S Circuit High Voltage Bank 1 Sensor 1
P0133 - HO2S Slow Response Bank 1 Sensor 1
P0134 - HO2S Circuit Insufficient Activity Bank 1 Sensor 1
P0135 - HO2S Heater Circuit Bank 1 Sensor 1
P0137 - HO2S Circuit Low Voltage Bank 1 Sensor 2
P0138 - HO2S Circuit High Voltage Bank 1 Sensor 2
P0139 - HO2S Slow Response Bank 1 Sensor 2
P0140 - HO2S Circuit Insufficient Activity Bank 1 Sensor 2
P0141 - HO2S Heater Circuit Bank 1 Sensor 2
P0142 - HO2S Circuit Bank 1 Sensor 3
P0143 - HO2S Circuit Low Voltage Bank 1 Sensor 3
P0144 - HO2S Circuit High Voltage Bank 1 Sensor 3
P0145 - HO2S Circuit Bank 1 Sensor 2 Slow Response
P0146 - HO2S Circuit Insufficient Activity Bank 1 Sensor 3
P0147 - HO2S Heater Circuit Bank 1 Sensor 3
P0150 - HO2S Circuit Bank 2 Sensor 1
P0151 - HO2S Circuit Low Voltage Bank 2 Sensor 1
P0152 - HO2S Circuit High Voltage Bank 2 Sensor 1
P0153 - HO2S Slow Response Bank 2 Sensor 1
P0154 - HO2S Circuit Insufficient Activity Bank 2 Sensor 1
P0155 - Heated Oxygen Sensor Heater Circuit (bank 2, sensor 1)
P0156 - HO2S Circuit Bank 2 Sensor 2
P0157 - HO2S Circuit Low Voltage Bank 2 Sensor 2
P0158 - HO2S Circuit High Voltage Bank 2 Sensor 2
P0159 - HO2S Slow Response Bank 2 Sensor 2
P0160 - HO2S Circuit Insufficient Activity Bank 2 Sensor 2
P0161 - HO2S Heater Circuit Bank 2 Sensor 2
P0162 - HO2S Circuit Bank 2 Sensor 3
P0163 - HO2S Circuit Bank 2 Sensor 3 Low Voltage
P0164 - HO2S Circuit Bank 2 Sensor 3 High Voltage
P0165 - HO2S Circuit Bank 2 Sensor 3 Slow Response
P0166 - HO2S Circuit Bank 2 Sensor 3 No Activity
P0167 - HO2S Heater Circuit Bank 2 Sensor 3
P0169 - Fuel Composition Sensor
P0170 - Fuel Trim Bank 1
P0171 - Fuel Trim System Lean Bank 1
P0172 - Fuel Trim System Rich Bank 1
P0174 - Fuel Trim System Lean Bank 2
P0175 - Fuel Trim System Rich Bank 2
P0176 - Fuel Composition Sensor Circuit
P0177 - Fuel Composition Sensor Circuit Performance
P0178 - Fuel Composition Sensor Circuit Low Voltage
P0179 - Fuel Composition Sensor Circuit High Voltage
P0180 - Fuel Temperature Sensor A Circuit
P0181 - Fuel Temperature Sensor A Circuit Range/Performance
P0182 - Fuel Temperature Sensor A Circuit Low Input
P0183 - Fuel Temperature Sensor A Circuit High Input
P0184 - Fuel Temperature Sensor 1 Circuit Intermittent
P0185 - Fuel Temperature Sensor 2 Circuit
P0186 - Fuel Temperature Sensor B Circuit Range/Performance
P0187 - Fuel Temperature Sensor B Circuit Low Input
P0189 - Fuel Temperature Sensor 2 Circuit Intermittent
P0190 - Fuel Rail Pressure Sensor Circuit
P0191 - Fuel Rail Pressure Sensor Circuit Performance
P0192 - Fuel Rail Pressure Sensor Circuit Low Voltage
P0193 - Fuel Rail Pressure Sensor Circuit High Voltage
P0194 - Fuel Rail Pressure Sensor Circuit Intermittent
P0195 - Engine Oil Temperature Sensor Circuit
P0196 - Engine Oil Temperature Sensor Performance
P0197 - Engine Oil Temperature Sensor Low Voltage
P0198 - Engine Oil Temperature Sensor High Voltage
P0199 - Engine Oil Temperature Sensor Intermittent
P0200 - Injector Control Circuit Voltage
P0201 - Injector 1 Control Circuit
P0202 - Injector 2 Control Circuit
P0203 - Injector 3 Control Circuit
P0204 - Injector 4 Control Circuit
P0205 - Injector 5 Control Circuit
P0205 - Injector 5 Control Circuit
P0206 - Injector 6 Control Circuit
P0207 - Injector 7 Control Circuit
P0208 - Injector 8 Control Circuit
P0209 - Injector 9 Control Circuit
P0210 - Injector 10 Control Circuit
P0211 - Injector 11 Control Circuit
P0212 - Injector 12 Control Circuit
P0213 - Cold Start Injector 1
P0214 - Cold Start Injector 2
P0215 - Engine Shutoff Control Circuit
P0216 - Injection Timing Control Circuit
P0217 - Engine Over Temperature - Hot Light Requested
P0218 - Transmission Fluid Over Temperature
P0219 - Engine Overspeed Condition
P0220 - Throttle Position Sensor 2 Circuit
P0222 - Throttle Position Sensor B Circuit Low Voltage
P0223 - Throttle Position Sensor B Circuit High Input
P0224 - Throttle Position Sensor B Circuit Intermittent
P0225 - Throttle Position Sensor 3 Circuit
P0226 - Throttle Position Sensor 3 Circuit Performance
P0227 - Throttle/Pedal Position Sensor/Switch "C Circuit Low"
P0228 - Throttle/Pedal Position Sensor/Switch "C Circuit High"
P0228 - APP Sensor 3 Circuit High Voltage
P0229 - Throttle Position Sensor C Circuit Intermittent
P0230 - Fuel Pump Relay Control Circuit
P0231 - Fuel Pump Feedback Circuit Low Voltage
P0232 - Fuel Pump Feedback Circuit High Voltage
P0232 - Fuel Pump Feedback Circuit High Voltage
P0234 - Turbocharger Engine Overboost
P0235 - Turbocharger Boost Sensor 1 Circuit
P0236 - Turbocharger Boost Sensor 1 Performance
P0237 - Turbocharger Boost Sensor 1 Circuit Low Voltage
P0238 - Turbocharger Boost Sensor 1 Circuit High Voltage
P0239 - Turbocharger Boost Sensor 2 Circuit
P0240 - Turbocharger Boost Sensor 2 Performance
P0241 - Turbocharger Boost Sensor 2 Circuit Low Voltage
P0242 - Turbocharger Boost Sensor 2 Circuit High Voltage
P0243 - Turbocharger Boost Solenoid Control Circuit
P0244 - Turbocharger Wastegate Solenoid 1 Performance
P0245 - Turbocharger Wastegate Solenoid 1 Low Voltage
P0246 - Turbocharger Wastegate Solenoid 1 High Voltage
P0247 - Turbocharger Wastegate Solenoid 2
P0248 - Turbocharger Wastegate Solenoid 2 Performance
P0249 - Turbocharger Wastegate Solenoid 2 Low Voltage
P0250 - Turbocharger Wastegate Solenoid 2 High Voltage
P0251 - Injection Pump Fuel Metering Control A
P0252 - Injector Pump 1 Rotor/Cam Performance
P0253 - Injector Pump 1 Rotor/Cam Low Voltage
P0254 - Injector Pump 1 Rotor/Cam High Voltage
P0255 - Injector Pump 1 Rotor/Cam Intermittent
P0256 - Injector Pump 2 Rotor/Cam
P0257 - Injector Pump 2 Rotor/Cam Performance
P0258 - Injector Pump 2 Rotor/Cam Low Voltage
P0259 - Injector Pump 2 Rotor/Cam High Voltage
P0260 - Injector Pump 2 Rotor/Cam Intermittent
P0261 - Cylinder #1 Injector Circuit Low
P0262 - Cylinder #1 Injector Circuit High
P0263 - Cylinder #1 Contribution/Balance
P0264 - Cylinder #2 Injector Circuit Low
P0265 - Cylinder #2 Injector Circuit High
P0266 - Cylinder #2 Contribution/Balance
P0267 - Cylinder #3 Injector Circuit Low
P0268 - Cylinder #3 Injector Circuit High
P0269 - Cylinder #3 Contribution/Balance
P0270 - Cylinder #4 Injector Circuit Low
P0271 - Cylinder #4 Injector Circuit High
P0272 - Cylinder #4 Contribution/Balance
P0273 - Cylinder #5 Injector Circuit Low
P0274 - Cylinder #5 Injector Circuit High
P0275 - Cylinder #5 Contribution/Balance
P0276 - Cylinder #6 Injector Circuit Low
P0277 - Cylinder #6 Injector Circuit High
P0278 - Cylinder 6 Contribution/Balance
P0279 - Cylinder #7 Injector Circuit Low
P0280 - Cylinder #7 Injector Circuit High
P0281 - Cylinder 7 Contribution Balance
P0282 - Cylinder #8 Injector Circuit Low
P0283 - Cylinder #8 Injector Circuit High
P0284 - Cylinder 8 Contribution/Balance
P0285 - Injector Circuit Cylinder 9 Low Voltage
P0286 - Injector Circuit Cylinder 9 High Voltage
P0287 - Cylinder 9 Balance System
P0288 - Injector Circuit Cylinder 10 Low Voltage
P0289 - Injector Circuit Cylinder 10 High Voltage
P0290 - Cylinder 10 Balance System
P0291 - Injector Circuit Cylinder 11 Low Voltage
P0292 - Injector Circuit Cylinder 11 High Voltage
P0293 - Cylinder 11 Balance System
P0294 - Injector Circuit Cylinder 12 Low Voltage
P0295 - Injector Circuit Cylinder 12 High Voltage
P0296 - Cylinder 12 Balance System
P0298 - Engine Oil Overtemperature Condition
P0300 - Random/Multiple Cylinder Misfire Detected
P0301 - Cylinder 1 Misfire Detected
P0302 - Cylinder 2 Misfire Detected
P0303 - Cylinder 3 Misfire Detected
P0304 - Cylinder 4 Misfire Detected
P0305 - Cylinder 5 Misfire Detected
P0306 - Cylinder 6 Misfire Detected
P0307 - Cylinder 7 Misfire Detected
P0308 - Cylinder 8 Misfire Detected
P0309 - Cylinder 9 Misfire Detected
P0310 - Cylinder 10 Misfire Detected
P0311 - Cylinder 11 Misfire Detected
P0312 - Cylinder 12 Misfire Detected
P0320 - Ignition/Distributor Engine Speed Input Circuit
P0321 - Ignition/Distributor Eng. Speed Ckt. Performance
P0322 - Ignition/Distributor Engine Speed Circuit No Signal
P0323 - Ignition/Distributor Engine Speed Circuit Intermittent
P0325 - Knock Sensor 1 Circuit Bank 1
P0326 - Knock Sensor 1 Circuit Range/Performance (Bank 1)
P0327 - Knock Sensor 1 Circuit Low Input (Bank1)
P0328 - Knock Sensor 1 Circuit High Input (Bank 1)
P0329 - Knock Sensor 1 Circuit Bank 1 Intermittent
P0330 - Knock Sensor 2 Circuit Bank 2
P0331 - Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332 - Knock Sensor 2 Circuit Low Input
P0333 - Knock Sensor 2 Circuit High Input
P0334 - Knock Sensor 2 Circuit Bank 2 Intermittent
P0335 - Crankshaft Position [CKP] Sensor A Circuit
P0336 - Crankshaft Position Sensor Circuit A Range/Performance
P0337 - CKP Sensor Circuit Low Frequency
P0338 - CKP Sensor Circuit High Frequency
P0339 - CKP Sensor Circuit Intermittent
P0340 - Camshaft Position Sensor A Circuit (Bank 1 or single sensor)
P0341 - Camshaft Position Sensor A Circuit Range/Performance (Bank 1 or single sensor)
P0342 - Camshaft Position Sensor Circuit Low Voltage
P0343 - Camshaft Position Sensor Circuit High Voltage
P0344 - Camshaft Position Sensor Circuit Intermittent
P0350 - Ignition Coil Primary/Secondary Circuit
P0351 - Ignition Coil A Primary/Secondary Circuit
P0352 - Ignition Coil B Primary/Secondary Circuit
P0353 - Ignition Coil C Primary/Secondary Circuit
P0354 - Ignition Coil D Primary/Secondary Circuit
P0355 - Ignition Coil E Primary/Secondary Circuit
P0356 - Ignition Coil F Primary/Secondary Circuit
P0357 - Ignition Coil G Primary/Secondary Circuit
P0358 - Ignition Coil H Primary/Secondary Circuit
P0360 - Ignition Coil J Primary/Secondary Circuit
P0361 - Ignition Coil K Primary/Secondary Circuit
P0362 - Ignition Coil L Primary/Secondary Circuit
P0370 - Timing Reference High Resolution System Peformance
P0371 - Too Many High Resolution Signal 1 Pulses
P0372 - Too Few High Resolution Signal 1 Pulses
P0373 - Intermittent High Resolution Signal 1 Pulse
P0374 - No High Resolution Signal 1 Pulses
P0375 - Timing Reference Signal 2 High Resolution
P0376 - Too Many High Resolution Signal 2 Pulses
P0377 - Too Few High Resolution Signal 2 Pulses
P0378 - Intermittent High Resolution Signal 2 Pulse
P0380 - Glow Plug/Heater Circuit A
P0381 - Glow Plug/Heater Indicator Circuit
P0385 - Crankshaft Position Sensor Circuit B
P0386 - CKP Sensor B Circuit Performance
P0387 - Crankshaft Position Sensor 2 Circuit Low Voltage
P0388 - Crankshaft Position Sensor 2 Circuit High Voltage
P0389 - Crankshaft Position Sensor 2 Circuit Intermittent
P0400 - Exhaust Gas Recirculation Flow
P0401 - Exhaust Gas Recirculation Flow Insufficient Detected
P0402 - Exhaust Gas Recirculation Flow Excessive Detected
P0403 - Exhaust Gas Recirculation Control Circuit
P0404 - Exhaust Gas Recirculation Control Circuit Range/Performance
P0405 - Exhaust Gas Recirculation Sensor A Circuit Low
P0406 - Exhaust Gas Recirculation Sensor A Circuit High
P0407 - EGR Sensor 2 Circuit Low Voltage
P0408 - EGR Sensor 2 Circuit High Voltage
P0410 - Secondary Air Injection System
P0411 - Secondary Air Injection Incorrect Upstream Flow Detected
P0412 - Secondary Air Injection Switching Valve A Circuit
P0413 - Secondary Air Injection Switching Valve A Circuit Open
P0414 - Secondary Air Injection Switching Valve A Circuit Shorted
P0416 - Secondary Air Injection Switching Valve B Circuit Open
P0417 - Secondary Air Injection Switching Valve B Circuit Shorted
P0418 - Secondary Air Injection System Relay A Circuit
P0419 - Secondary Air Injection System Relay B Circuit
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
P0421 - Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422 - Main TWC Efficiency Bank 1 Below Threshold
P0423 - Heated TWC Efficiency Bank 1 Below Threshold
P0424 - Heated TWC Temperature Bank 1 Below Threshold
P0426 - Catalyst Temperature Sensor Range/Performance (Bank1)
P0427 - Catalyst Temperature Sensor Low Input (Bank 1)
P0428 - Catalyst Temperature Sensor High Input (Bank 1)
P0430 - Catalyst System Low Efficiency Bank 2
P0431 - Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 - Main TWC Efficiency Bank 2 Below Threshold
P0433 - Heated TWC Efficiency Bank 2 Below Threshold
P0434 - Heated TWC Temperature Bank 2 Below Threshold
P0436 - Catalyst Temperature Sensor Range/Performance (Bank2)
P0437 - Catalyst Temperature Sensor Low Input (Bank 2)
P0438 - Catalyst Temperature Sensor High Input (Bank 2)
P0440 - Evaporative Emission Control System
P0441 - Evaporative Emission Control System Incorrect Purge Flow
P0442 - Evaporative Emission Control System Leak Detected (small leak)
P0443 - Evaporative Emission Control System Purge Control Valve Circuit
P0444 - Evaporative Emission Control System Purge Control Valve Circuit Open
P0445 - Evaporative Emission Control System Purge Control Valve Circuit Shorted
P0446 - Evaporative Emission Control System Vent Control Circuit
P0447 - EVAP Vent Valve Control Circuit Open
P0448 - EVAP Vent Valve Control Circuit Shorted
P0449 - EVAP Canister Vent Solenoid Valve Control Circuit
P0450 - Evaporative Emission Control System Pressure Sensor
P0451 - Evaporative Emission Control System Pressure Sensor Range/Performance
P0452 - Evaporative Emission Control System Pressure Sensor Low Input
P0453 - Evaporative Emission Control System Pressure Sensor High Input
P0455 - Evaporative Emission Control System Leak Detected (gross leak/no flow)
P0456 - Evaporative Emission Control System Leak Detected (very small leak)
P0460 - Fuel Level Sensor Circuit
P0461 - Fuel Level Sensor Circuit Range/Performance
P0462 - Fuel Level Sensor Circuit Low Voltage
P0463 - Fuel Level Sensor Circuit High Voltage
P0464 - Fuel Level Sensor Circuit Intermittent
P0465 - Purge Flow Sensor Circuit
P0466 - Purge Flow Sensor Circuit Performance
P0467 - Purge Flow Sensor Circuit Low Voltage
P0468 - Purge Flow Sensor Circuit High Voltage
P0469 - Purge Flow Sensor Circuit Intermittent
P0470 - Exhaust Pressure Sensor
P0471 - Exhaust Pressure Sensor Range/Performance
P0472 - Exhaust Pressure Sensor Low Input
P0473 - Exhaust Pressure Sensor High Input
P0474 - Exhaust Pressure Sensor Circuit Intermittent
P0475 - Exhaust Pressure Control Valve
P0476 - Exhaust Pressure Control Valve Range/Performance
P0477 - Exhaust Pressure Control Valve Circuit Low Voltage
P0478 - Exhaust Pressure Control Valve High Input
P0479 - Exhaust Pressure Control Valve Intermittent
P0480 - Coolant Fan 1 Control Circuit
P0481 - Coolant Fan Relay 2 Control Circuit
P0500 - Vehicle Speed Sensor
P0501 - Vehicle Speed Sensor Range/Performance
P0502 - Vehicle Speed Sensor Circuit Low Input
P0503 - Vehicle Speed Sensor Intermittent
P0505 - Idle Control System
P0506 - Idle Control System RPM Lower Than Expected
P0507 - Idle Control System RPM Higher Than Expected
P0508 - Idle Control System Circuit Low
P0509 - Idle Control System Circuit High
P0510 - Closed Throttle Position Switch
P0512 - Starter Request Circuit Performance
P0522 - Engine Oil Pressure Sensor Circuit Low Voltage
P0523 - Engine Oil Pressure Sensor Circuit High Voltage
P0530 - A/C Refrigerant Pressure Sensor Circuit
P0532 - Air Conditioning [A/C] Refrigerant Pressure Sensor Circuit Low Voltage
P0533 - A/C Refrigerant Pressure Sensor Circuit High Voltage
P0533 - Air Conditioning [A/C] Refrigerant Pressure Sensor Circuit High Voltage
P0534 - Air Conditioner Refrigerant Charge Loss
P0541 - Intake Air Heater Circuit Low
P0542 - Intake Air Heater Circuit High
P0550 - Power Steering Pressure Sensor Circuit
P0551 - Power Steering Pressure Sensor Circuit Range/Performance
P0552 - Power Steering Pressure Sensor Circuit Low Voltage
P0553 - Power Steering Pressure Sensor Circuit High Voltage
P0554 - Power Steering Pressure Sensor Circuit Intermittent
P0560 - System Voltage
P0561 - System Voltage Unstable
P0562 - System Voltage Low
P0563 - System Voltage High
P0565 - Cruise Control ON Signal
P0566 - Cruise Control OFF Signal
P0567 - Cruise Control RESUME Signal
P0568 - Cruise Control SET Signal
P0569 - Cruise Control COAST Signal
P0570 - Cruise Control ACCEL Signal
P0571 - Cruise Control Brake Switch A Circuit
P0572 - Cruise Brake Switch 1 Circuit Low Voltage
P0573 - Cruise Brake Switch 1 Circuit High Voltage
P0574 - Cruise Control System - Vehicle Speed Too High
P0600 - Serial Communication Link
P0601 - Internal Control Module Memory Check Sum Error
P0602 - Powertrain Control Module Programming Error
P0603 - Powertrain Control Module Keep Alive Memory (KAM) Error
P0604 - Internal Control Module Random Access Memory Error
P0605 - Powertrain Control Module Read Only Memory (ROM) Error
P0606 - ECM/PCM Processor
P0608 - Vehicle Speed Output Circuit
P0615 - Starter Relay Control Circuit
P0620 - Generator Control Circuit
P0621 - GEN Lamp 'L' Control Circuit
P0622 - GEN Field 'F' Control Circuit
P0636 - Power Steering Control Circuit Low
P0637 - Power Steering Control Circuit High
P0640 - Intake Air Heater Control Circuit
P0645 - A/C Clutch Relay Control Circuit
P0646 - A/C Clutch Relay Circuit Low Voltage
P0647 - A/C Clutch Relay Circuit High Voltage
P0650 - Malfunction Indicator Lamp (MIL) Control Circuit
P0654 - Engine Speed Output Circuit
P0656 - Fuel Level Output Circuit
P0660 - Intake Manifold Tuning Valve Control Circuit - Bank 1
P0661 - Intake Manifold Tuning Valve Control Circuit Low - Bank 1
P0662 - Intake Manifold Tuning Valve Control Circuit High - Bank 1
P0666 - PCM/ECM/TCM Internal Temperature Sensor Circuit
P0670 - Glow Plug Module Control Circuit
P0671 - Cylinder 1 Glow Plug Circuit
P0672 - Cylinder 2 Glow Plug Circuit
P0673 - Cylinder 3 Glow Plug Circuit
P0674 - Cylinder 4 Glow Plug Circuit
P0675 - Cylinder 5 Glow Plug Circuit
P0676 - Cylinder 6 Glow Plug Circuit
P0677 - Cylinder 7 Glow Plug Circuit
P0678 - Cylinder 8 Glow Plug Circuit
P0683 - Glow Plug Control Module to PCM Communication Circuit
P0684 - Glow Plug Control Module to PCM Communication Circuit Range/Performance
P0700 - Transmission Control System (MIL Request)
P0701 - Transmission Control System Performance
P0702 - Transmission Control System Electrical
P0703 - Brake Switch B Input Circuit
P0703 - Brake Switch Circuit
P0704 - Clutch Switch Input Circuit
P0705 - Transmission Range Sensor Circuit (PRNDL Input)
P0706 - Transmission Range Sensor Circuit Range/Performance
P0707 - Transmission Range Sensor Circuit Low Input
P0708 - Transmission Range Sensor Circuit High Input
P0709 - Transmission Range Sensor Circuit Intermittent
P0710 - Transmission Fluid Temperature Sensor Circuit
P0711 - Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 - Transmission Fluid Temperature Sensor Circuit Low Input
P0713 - Transmission Fluid Temperature Sensor Circuit High Input
P0714 - Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 - Turbine Shaft Speed Sensor Circuit
P0716 - Input/Turbine Speed Sensor Circuit Performance
P0717 - Input/Turbine Speed Sensor Circuit No Signal
P0718 - Turbine Shaft Speed Sensor Circuit Intermittent
P0719 - Brake Switch 2 Circuit Low Voltage
P0720 - Output Shaft Speed Sensor Circuit
P0721 - Output Shaft Speed Sensor Circuit Range/Performance
P0722 - Output Shaft Speed Sensor Circuit No Signal
P0723 - Output Shaft Speed Sensor Circuit Intermittent
P0724 - Brake Switch 2 Circuit High Voltage
P0725 - Engine Speed Input Circuit
P0726 - Engine Speed Input Circuit Performance
P0727 - Engine Speed Circuit - No Signal
P0728 - Engine Speed Input Circuit Intermittent
P0730 - Incorrect Gear Ratio
P0731 - Gear 1 Incorrect Ratio
P0732 - Gear 2 Incorrect Ratio
P0733 - Gear 3 Incorrect Ratio
P0734 - Gear 4 Incorrect Ratio
P0735 - Gear 5 Incorrect Ratio
P0736 - Reverse Incorrect Ratio
P0740 - Torque Converter Clutch Circuit
P0741 - Torque Converter Clutch Circuit Performance Stuck Off
P0742 - Torque Converter Clutch Circuit Stuck On
P0743 - Torque Converter Clutch Circuit Electrical
P0744 - Torque Converter Clutch Circuit Intermittent
P0745 - Pressure Control Solenoid A
P0746 - Pressure Control Solenoid A Performance or Stuck Off
P0747 - Pressure Control Solenoid Stuck On
P0748 - Pressure Control Solenoid Electrical
P0749 - Pressure Control Solenoid Circuit Intermittent
P0750 - Shift Solenoid A
P0751 - Shift Solenoid A Performance or Stuck Off
P0752 - Shift Solenoid A Stuck On
P0753 - Shift Solenoid A Electrical
P0754 - 1-2 Shift Solenoid Intermittent
P0755 - Shift Solenoid B
P0756 - Shift Solenoid B Performance or Stuck Off
P0757 - Shift Solenoid B Stuck On
P0758 - Shift Solenoid B Electrical
P0761 - Shift Solenoid C Performance or Stuck Off
P0762 - 3-4 Shift Solenoid Stuck On
P0763 - Shift Solenoid C Electrical
P0764 - 3-4 Shift Solenoid Intermittent
P0765 - Shift Solenoid D
P0766 - Shift Solenoid D Performance or Stuck Off
P0767 - 4-5 Shift Solenoid Stuck On
P0768 - Shift Solenoid D Electrical
P0769 - 4-5 Shift Solenoid Intermittent
P0770 - Shift Solenoid E
P0772 - Shift Solenoid E Stuck On
P0773 - Shift Solenoid E Electrical
P0774 - Shift Solenoid 5 Intermittent
P0775 - Pressure Control Solenoid B
P0779 - Pressure Control Solenoid B Intermittent
P0780 - Shift
P0781 - 1-2 Shift
P0782 - 2-3 Shift
P0783 - 3-4 Shift
P0784 - 4-5 Shift
P0785 - Shift Timing Solenoid
P0786 - Shift Timing Solenoid Performance
P0787 - Shift Timing Solenoid Low Voltage
P0788 - Shift Timing Solenoid High Voltage
P0789 - Shift Timing Solenoid Intermittent
P0790 - Normal/Performance Switch Circuit
P0791 - Intermediate Shaft Speed Sensor Circuit
P0794 - Intermediate Shaft Speed Sensor Circuit Intermittent
P0795 - Pressure Control Solenoid C
P0796 - Pressure Control Solenoid C Performance or Stuck Off
P0797 - Pressure Control Solenoid C Stuck On
P0799 - Pressure Control Solenoid C Intermittent

Blazee 08-05-2005 06:18 PM

Re: **Diagnostic Trouble Codes**
 
P0801 - Reverse Inhibit Control Circuit
P0803 - 1-4 Upshift (Skip Shift) Solenoid Control Circuit
P0804 - 1-4 Upshift (Skip Shift) Lamp Control Circuit
P0812 - Reverse Input Circuit
P0814 - Transmission Range Display Circuit
P0815 - Upshift Switch Circuit
P0816 - Downshift Switch Circuit
P0818 - Driveline Disconnect Switch Input Circuit
P0840 - Transmission Fluid Pressure Sensor/Switch A Circuit
P0841 - Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
P0844 - Transmission Fluid Pressure Sensor/Switch A Circuit Intermittent
P0846 - Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
P1107 - Manifold Absolute Pressure (MAP) sensor circuit intermittent low voltage
P1111 - Intake Air Temperature (IAT) sensor circuit intermittent high voltage
P0112 - Intake Air Temperature (IAT) sensor circuit intermittent low voltage
P0114 - Engine Coolant Temperature (ECT) sensor circuit intermittent low voltage
P0115 - Engine Coolant Temperature (ECT) sensor circuit intermittent high voltage
P1121 - Throttle Position (TP) sensor circuit intermittent high voltage
P1122 - Throttle Position (TP) sensor circuit intermittent low voltage
P1133 - Heated Oxygen Sensor (HO2S) insufficient switching Bank 1 sensor 1
P1134 - Heated Oxygen Sensor (HO2S) transition time ratio Bank 1 sensor 1
P1153 - Heated Oxygen Sensor (HO2S) insufficient switching Bank 2 sensor 1
P1154 - Heated Oxygen Sensor (HO2S) transition time ratio Bank 2 sensor 1
P1171 - Fuel system lean during acceleration
P1222 - Injector control circuit intermittent
P1351 - Ignition Control (IC) circuit high voltage (open circuit)
P1361 - Ignition Control (IC) circuit high voltage (shorted or grounded circuit)
P1371 - Distributor Ignition (DI) low resolution circuit
P1380 - EB(T)CM DTC detected-rough road data unusable
P1381 - Misfire detected-no EB(T)CM/PCM serial data
P1415 - Secondary Air Injection (AIR) system Bank 1
P1416 - Secondary Air Injection (AIR) system Bank 2
P1441 - Evaporative Emissions (EVAP) system flow during non-purge
P1506 - Idle Air Control (IAC) system low RPM
P1509 - Idle Air Control (IAC) system high RPM
P1532 - A/C Evaporator Temperature sensor circuit low voltage
P1533 - A/C Evaporator Temperature sensor circuit high voltage
P1539 - A/C clutch status circuit high voltage
P1543 - A/C system performance
P1545 - A/C clutch relay control circuit
P1546 - A/C clutch status circuit low voltage
P1572 - Traction Control System (ASR/TCS) active circuit low voltage too long
P1626 - Theft deterrent system fuel enable circuit
P1641 - Fan Control (FC) relay 1 control circuit
P1642 - Fan Control (FC) relay 2 and 3 control circuit
P1643 - Engine speed (RPM) output circuit
P1652 - Vehicle Speed Sensor (VSS) output circuit
P1657 - Skip shift/One to four upshift system control circuit
P1661 - Malfunction Indicator Lamp (MIL) control circuit
P1664 - Skip shift/One to four upshift upshift lamp control circuit
P1667 - Reverse inhibit solenoid control circuit
P1810 - Pressure Switch Assembly (PSA) Circuit Malfunction
P1812 - Transmission Fluid Overtemperature
P1860 - TCC PWM Solenoid Circuit – Electrical
P1864 - TCC Solenoid Circuit – Electrical
P1870 - Transmission Component Slipping
P1886 - 3-2 Control Solenoid Circuit – Electrical

Nefarious 12-04-2005 03:58 PM

Re: **Diagnostic Trouble Codes**
 
great post. Thanks!

whitedime 12-08-2005 10:51 AM

Re: **Diagnostic Trouble Codes**
 
so what should i do if i have a code 23

( o )( o ) 12-09-2005 02:46 PM

Re: **Diagnostic Trouble Codes**
 
P1406 auxiliary emissions controls - EGR pintle position - in my case carbon chunks prevented the egr valve from closing.

BLACKBOWTIESS10 12-12-2005 01:39 AM

Re: **Diagnostic Trouble Codes**
 
PO102 caused me a huge headache, stupid MAF

Great post, that took some time, thank you.

Lenny95NeoN 12-26-2005 03:19 PM

PCM reset procedure.
 
This should be added to the above sticky, or maybe made a sticky of its own

Quote:

Originally Posted by Raydar
FWIW, I found this in an old post.
PCM reset procedure.

1. Turn the key on. Don't start the engine.
2. Pull out the "ECM-B" fuse. (Under the hood)
3. Turn the key off.
4. Reinstall the fuse.
5. Start the engine and drive for a while. Long enough to bring the engine up to operating temp. (When you first start it, it won't want to idle. That's normal.)
6. Let it cool down.


Stevenx25 02-03-2006 08:11 PM

Re: **Diagnostic Trouble Codes**
 
Blazze. I have 2 codes I coulnt find on the chart. I just got my truck back today and the reciept says codes, 440A, 449B, all evap system. In a 01 4.3L. It will be highly appreciated dude. Thanks

Blazee 02-03-2006 08:38 PM

Re: **Diagnostic Trouble Codes**
 
There aren't any codes like that. It's probably their way of writing:

P0440 - Evaporative Emission Control System

P0449 - EVAP Canister Vent Solenoid Valve Control Circuit

Dimeslammer 02-10-2006 04:59 AM

Re: **Diagnostic Trouble Codes**
 
my truck is throwing p102, p0440,p0443,and p0449...i got a new maf sensor and still ran the same...now my truck died today..gas gause is reading past E and i have 1/2 tank of gas....did my fuel pump go out or what could it b?

pearlpurple 02-21-2006 08:32 PM

Re: PCM reset procedure.
 
Quote:

Originally Posted by Lenny95NeoN
This should be added to the above sticky, or maybe made a sticky of its own

The PCM reset, is this for OBDI or OBDII ??

Jay02XBlazer 02-26-2006 08:53 AM

Re: PCM reset procedure.
 
Quote:

Originally Posted by pearlpurple
The PCM reset, is this for OBDI or OBDII ??

that is for obd 1 obd when it sets a a hard code it will store it in memory the only way to truely erase the code is with a scanner or have the battery disconnected for a long long time the light will go out if the battery is disconnected for a day or so but the code is still there

Jay

tomsinnott 03-03-2006 07:14 PM

Re: **Diagnostic Trouble Codes**
 
I got a P1442 on my 95 Jimmy - Evaproative Emission Control Sytem Leak Detected??? Ever heard of that one? It's got me stumpped!!!

tippmann243 03-03-2006 09:06 PM

Re: **Diagnostic Trouble Codes**
 
tighten your gas cap

tomsinnott 03-03-2006 11:19 PM

Re: **Diagnostic Trouble Codes**
 
I tried that and still nothing... The light just comes and goes man. I even used a vacuum pump on it and left it under pressure for 30 minutes and no drop, to make sure it is holding pressure and everything looks great and then the light will go off for a while and then just when I think it's fixed it's on??? It runs good so I am thinking that maybe the solenoid for the EGR is starting to go or something???

tippmann243 03-04-2006 12:03 AM

Re: **Diagnostic Trouble Codes**
 
have you reset the computer yet?

tomsinnott 03-04-2006 10:18 AM

Re: **Diagnostic Trouble Codes**
 
yep and still won't go off? I think it has to be something electronic because I can't find any leaks whatsoever???:rant:

Jay02XBlazer 03-04-2006 10:45 AM

Re: **Diagnostic Trouble Codes**
 
the purge vent valve could be hanging causing a issue

Jay

ordspec 03-04-2006 11:50 AM

Re: **Diagnostic Trouble Codes**
 
great post

sonoma-project 03-05-2006 05:54 PM

Re: **Diagnostic Trouble Codes**
 
Ok,yesterday i ran a code check on my truck and it came up with 302, misfire on cylinder 2. Pulled the plug and it was messed up, ended up replacing all of them. Now im driving it and another code comes up, go to autozone, check it and its 300, misfire on random/all cylinders. Why is it doing this? Its running better than it was before, better idle but im still lacking power. Would a bad fuel pump cause a misfire?? Fuel filter?? Distributor?? What should i do?

JohnnyT 03-06-2006 09:42 PM

Re: **Diagnostic Trouble Codes**
 
This should definitely be a sticky..holy crap

s10-den 03-13-2006 06:49 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by sonoma-project
Ok,yesterday i ran a code check on my truck and it came up with 302, misfire on cylinder 2. Pulled the plug and it was messed up, ended up replacing all of them. Now im driving it and another code comes up, go to autozone, check it and its 300, misfire on random/all cylinders. Why is it doing this? Its running better than it was before, better idle but im still lacking power. Would a bad fuel pump cause a misfire?? Fuel filter?? Distributor?? What should i do?

I had a 98 43 5 speed that did the same thing,never could figure it out so i sold it

s10-den 03-13-2006 06:51 AM

Re: **Diagnostic Trouble Codes**
 
I got a 1870 on mine and it said something about a 4x4.mine is a 2 wheel drive

nater006 03-13-2006 10:29 AM

Re: **Diagnostic Trouble Codes**
 
The information already is in a sticky.

Note the top of the forum, the last sticky with "Trouble codes" listed.

Good information regardless.

Blazee 03-13-2006 12:27 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by s10-den
I got a 1870 on mine and it said something about a 4x4.mine is a 2 wheel drive

Cheap scanners show it as a 4wd problem. It is actually "Transmission Component Slipping". Check out this thread for more info:
http://www.s10forum.com/forum/f13/transmission-problems-common-issues-and-solutions-236668/

nater006 03-13-2006 02:27 PM

Re: **Diagnostic Trouble Codes**
 
Very curious - that link mentions a 30,000 mile interval for fluid and filter. I had thought 50,000 was a decent interval to do that in, as long as you didn't go to 100,000 like some people.. :) Any research this is based off of? 153,000 on a stock trans with a deep pan, vette servo, and external cooler, and I'm just wondering how much longer it will last.

Blazee 03-13-2006 03:24 PM

Re: **Diagnostic Trouble Codes**
 
50,000 would be fine for a lot of people, it is the interval that GM recommends for normal use. They say 15,000 for vehicles that
1) do a lot towing
2) are driven in city traffic in temperatures above 90
3) are driven in areas with a lot of hills or mountains.

I listed 30,000 as the interval for several reasons.
1) Most s10 and Blazer owners fall between the two catergories listed by GM
2) It's the interval I've always gone by.
3) It's also what's listed in the Haynes manual, their reasoning for it being shorter than the factory recommendation is to promote maximum service life.

ominousred 03-20-2006 11:28 AM

Re: **Diagnostic Trouble Codes**
 
Great Post.

DevilDriver 03-20-2006 11:37 AM

Re: **Diagnostic Trouble Codes**
 
added to technical specs:
http://www.s10forum.com/diagnostic_trouble_codes

very nice post btw.

Skrat 04-09-2006 01:13 PM

Re: **Diagnostic Trouble Codes**
 
I have a '01 Sonoma 4.3 auto and got trouble code "P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)"

It seems kinda vague and can only figure the thermostat needs to be replaced. Can anyone tell me if this is right?

?#2 I've heard of people getting more power out of different thermostat settings. Stick with the 195 degree or will a 170degree produce more power? Seems kinda odd that it would but not sure with a cooler engine temp and how the engine management would deal with this!?

Thanks

rat 04-09-2006 01:25 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Skrat
I have a '01 Sonoma 4.3 auto and got trouble code "P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)"

It seems kinda vague and can only figure the thermostat needs to be replaced. Can anyone tell me if this is right?

?#2 I've heard of people getting more power out of different thermostat settings. Stick with the 195 degree or will a 170degree produce more power? Seems kinda odd that it would but not sure with a cooler engine temp and how the engine management would deal with this!?

Thanks

What temp does your truck get up to? Thermostats are cheep, so i would replace that first.

I'd stick with the 195, you could try the 180/170, but you might get the light. The ls1 style ecm's seem to be more picky.

mat1583 04-09-2006 02:06 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by rat
What temp does your truck get up to? Thermostats are cheep, so i would replace that first.

I'd stick with the 195, you could try the 180/170, but you might get the light. The ls1 style ecm's seem to be more picky.

I'm probably going to change over to a 170 degree thermostat today. Brian from tbichips sent that along with my computer chip, so I'm assuming he made provisions for one when he burnt the chip. I've replaced the stat before, so I don't expect it to be much trouble. I am having a problem though. When I turn on the truck, the gauge kicks up to about 110 instead of starting at 0, and when heated up gets up to about 220. I know it's not that high though because my e-fan doesn't kick into high (at about 185). What could possible cause this? Maybe it's a bad sensor? The thing is that I changed out the sensor a year or two ago. Hmmm...

rat 04-09-2006 02:17 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by mat1583
I'm probably going to change over to a 170 degree thermostat today. Brian from tbichips sent that along with my computer chip, so I'm assuming he made provisions for one when he burnt the chip. I've replaced the stat before, so I don't expect it to be much trouble. I am having a problem though. When I turn on the truck, the gauge kicks up to about 110 instead of starting at 0, and when heated up gets up to about 220. I know it's not that high though because my e-fan doesn't kick into high (at about 185). What could possible cause this? Maybe it's a bad sensor? The thing is that I changed out the sensor a year or two ago. Hmmm...

Bad sensor, dirty connections maybe.

The 2000 and down ecm's don't have any problems with the cooler thermostats.

crazy_s_dime 04-20-2006 09:37 PM

Re: **Diagnostic Trouble Codes**
 
I have a 94 4.3L VIN Z engine and it will crank but no fuel will come from the TBI. Whats the problem? I dont think i can read the codes, but i will go try

xtrm-s10 04-21-2006 05:21 PM

Re: **Diagnostic Trouble Codes**
 
here is one for you blaze.

I got a 95 jimmy 4.3 w code.

wont run at all
I was cruzing at about 70 and it just quit
new bat
new crank pos sen
new can pos sen
checked ignition mod (good)
new fuel pump (jumped it and it will presure up)

so I turn on the key to start and it will turn over but no go.

I have no fuel pres and no spark.

I hooked up a genisus scan tool to the aldl and it tells me to check for ground and to make sure that it is pluged in.

I checked the aldl and I have the 6 wire one 2 for the data 2 for ground one hot I dont remember what the other is for.

could this be a bad computer?

Thanks, Brian Wakefield

redmike954 04-24-2006 07:58 PM

Re: **Diagnostic Trouble Codes**
 
great thread first of all . okay i used a piece of wire to connect A to B and the light comes on then goes out and comes back on..thats only one flash. so is it 1 or 11 or what kuz 1 or 11arent codes on the list, i dont understand. what am i doin wrong? thanks for the help

scooter9715 07-03-2006 09:54 PM

Re: **Diagnostic Trouble Codes**
 
My truck is throwing 2 codes....

P0135 & P0304 what do you think I should do?

j894 07-03-2006 10:31 PM

Re: **Diagnostic Trouble Codes**
 
P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0304 Cylinder 4 Misfire Detected

Replace the bank 1 sensor 1, sensor. P0304 may be caused by it

rat 07-03-2006 11:43 PM

Re: **Diagnostic Trouble Codes**
 
The cyl 4 misfire could be as simple as a loose spark plug connection, or bad wire, cap/rotor, sparkplug, or fuel injector.

cpolaris502 07-06-2006 10:47 PM

Re: **Diagnostic Trouble Codes**
 
okay, my 99 blazer says 2 codes, both are the exact same. They're P0420. Do i need to replace the cat?

j894 07-07-2006 02:32 AM

Re: **Diagnostic Trouble Codes**
 
http://www.obd-codes.com/trouble_cod...old-bank-1.php

cpolaris502 07-07-2006 11:26 AM

Re: **Diagnostic Trouble Codes**
 
awesome thanks.

mikewiebe1987 07-10-2006 06:24 AM

Re: **Diagnostic Trouble Codes**
 
my 93 vin z 4.3 tbi started flashing service engine soon, took it to a local shop and he told me itw as throwing a code 38, he said ESC, electronic spark control module i beleive, suggested i do a tu ne up then replace the esc but code 38 shows brake switch? could he mean electronic brake control relay or somthing?? realy confused, also can't seem to find the part number for teh ESC , anyone had this before?
btw he cleared the code but it came bakc instantly
any help is appreciated thanks

digital_xtreme 07-17-2006 01:52 AM

Re: **Diagnostic Trouble Codes**
 
P0300... been getting that lately... ran seafoam through the engine and the code went away... runs better now also... gotta love seafoam

chinobling831 09-06-2006 04:08 PM

Re: **Diagnostic Trouble Codes**
 
im new to this !!!! but i love my s10 haha.


anyway here is the problem. i keep getting a random misfire code p0300. so far ive changed ... plugs,cap/rotor,wires,cam sensor,crank sensor. ive checked the tps,map,and cleaned the maf. all seem to work ok. im lost i dont really want to mess with the fuel injectors and stuff but i think im gonna have to, unless u guys have any other ideas.???? anyway i just bought an autoxray scan tool for 360 dollars and i got this code that my friends code reader didnt pick up its p1100 manufacturer specific powertrain trouble code. any ideas what the hell it is? ur help is greatly appreciated.

oh yeah did i mention that i had to put a non op. on my truck cuz of this!!!!! it wont pass smog and my smog was due last montch so i havent driven it in a couple weeks, i have to drive my moms piece of ford!!!!! HELP!

FxsX24 09-06-2006 05:45 PM

Re: **Diagnostic Trouble Codes**
 
anyone know what obdi code 40 is 91 4.3 (Z)

bagdbug 09-06-2006 06:05 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Quote: Originally Posted by sonoma-project Ok,yesterday i ran a code check on my truck and it came up with 302, misfire on cylinder 2. Pulled the plug and it was messed up, ended up replacing all of them. Now im driving it and another code comes up, go to autozone, check it and its 300, misfire on random/all cylinders. Why is it doing this? Its running better than it was before, better idle but im still lacking power. Would a bad fuel pump cause a misfire?? Fuel filter?? Distributor?? What should i do?


I had a 98 43 5 speed that did the same thing,never could figure it out so i sold it
Mine does that crap too.

stlblzn02xtreem 09-11-2006 09:15 PM

Re: **Diagnostic Trouble Codes**
 
If you go into your owners man and you look on the fuse for the ecu in the engine compartment, you unplug it while the truck is runing it will reset the code. just a thought if you need inspection and dont have acess to a codr reader.

stlblzn02xtreem 09-11-2006 09:16 PM

Re: **Diagnostic Trouble Codes**
 
*code reader.
It worked for my 02 blazer

Rich J. 02-19-2007 09:45 AM

Re: **Diagnostic Trouble Codes**
 
Just re-installed my hypertech and it read code #C1269. I tried to google it to no avail. The P0155 and P0135 are O2 sensors I believe?

SA-S10 02-21-2007 12:03 PM

Re: **Diagnostic Trouble Codes**
 
Have you tried this site? OBD-II - On-Board Diagnostic System

amraam35 03-05-2007 07:23 PM

Re: **Diagnostic Trouble Codes**
 
if u have the engine running when up jump term. A and B, just like to check the codes, it tells u if its open loop or closed loop. anyone know what these signals actually are

never_finished92 03-07-2007 02:50 PM

Re: **Diagnostic Trouble Codes**
 
i just made a thread, and then saw this one...oops

P0410 - Secondary Air Injection System

thats the code i got, what could be wrong?

roachrod 03-07-2007 03:27 PM

P1345 Code
 
I've got an 02 blazer extreme with a P1345 code, which is camshaft and crankshaft corrilation. I replaced both the camshaft and crankshaft sensors, and the thing still throws the codes. Any ideas?

rat 03-07-2007 03:40 PM

Re: P1345 Code
 
Quote:

Originally Posted by roachrod (Post 3860048)
I've got an 02 blazer extreme with a P1345 code, which is camshaft and crankshaft corrilation. I replaced both the camshaft and crankshaft sensors, and the thing still throws the codes. Any ideas?

You need to have the dealer do a crank re-learn.

You may be able to do it yourself by elongating the distributor hold down hole. But that is just guessing. Or your distributor may be off a tooth, or you may have a ton of slop in the distributor gear, or timing chain.

ThatOneGuy 03-10-2007 01:04 AM

Re: **Diagnostic Trouble Codes**
 
r these just general gm codes because i didnt know any s-10 turbo diesels, glow plug codes, turbo codes, injection pump codes? just wondering

rat 03-10-2007 01:09 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ThatOneGuy (Post 3868208)
r these just general gm codes because i didnt know any s-10 turbo diesels, glow plug codes, turbo codes, injection pump codes? just wondering

These are obd2 codes, it is mostly standard. Some are manufacture specific.
OBD-II Trouble Codes

They did sell s10's with turbo diesels though, but not in this country.

ThatOneGuy 03-10-2007 05:58 PM

Re: **Diagnostic Trouble Codes**
 
wow i dint no they had diesel s-10s and how can i get one??

rat 03-10-2007 07:15 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ThatOneGuy (Post 3869241)
wow i dint no they had diesel s-10s and how can i get one??

Go to south america?

SaltyOnionBalls 04-04-2007 12:33 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ( o )( o ) (Post 2856306)
P1406 auxiliary emissions controls - EGR pintle position

I just scanned my Jimmy I just bought and this was the only code that came up.

What does this mean? Do I have to replace the EGR Valve?

Need help, thanks.

tippmann243 04-04-2007 11:59 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by rat (Post 3869426)
Go to south america?

diesel s10's were also sold in america

viper17z 04-16-2007 10:00 PM

Re: **Diagnostic Trouble Codes**
 
I need an explanation for a B2600 trouble code on a 03 4.3 auto.

gmcjimmy96 04-22-2007 08:38 PM

Re: **Diagnostic Trouble Codes**
 
i've got codes 700 and 1100....what are they, i know code 700 is transmission control system..buuut what is that??? and i cant find 1100 on the chart.

Rockrz 07-19-2007 11:06 PM

Re: **Diagnostic Trouble Codes**
 
OBDII Codes is for '96 and up, right?

ewf3 07-20-2007 06:49 AM

Re: **Diagnostic Trouble Codes**
 
right

droppedss 09-15-2007 02:54 PM

Re: **Diagnostic Trouble Codes**
 
P0756 - Shift Solenoid B Performance or Stuck Off. I replaced both shift solenoids..still does it after driving it for a bit.

cmittle 09-24-2007 12:41 AM

Re: **Diagnostic Trouble Codes**
 
Is there a way to read the code in my '88 S10 pickup?

Thanks,
Cory

itscypha 09-26-2007 08:01 PM

Re: **Diagnostic Trouble Codes**
 
P0141 - HO2S Heater Circuit Bank 1 Sensor 2
Thats what i got in my 95 blazer... what should i do to fix this clean out the o2 sensor check the wires or just replace it?

dropit 10-26-2007 12:32 PM

Re: **Diagnostic Trouble Codes**
 
ok i have a 95 4x4 jimmy 4.3 has the w code motor but is the obe 2 system and im getting the codes p0700 and a p1100 i was wondering do u know what that might be i know the p0700 is Transmission Control System (MIL Request) but what is this

2.5Dime 10-30-2007 06:15 PM

Re: **Diagnostic Trouble Codes**
 
I was wondering if i have one and where the aldl would be on my 91 s-10

2.5Dime 11-06-2007 06:13 PM

Re: **Diagnostic Trouble Codes**
 
I got a code 22 which deals with the tps is my only option to get a new one?

Squeegee 11-11-2007 05:31 PM

Re: **Diagnostic Trouble Codes**
 
how can i tell what code i have. the only thing i can get is code 12 :dunno:

mrriverajr 11-30-2007 02:28 PM

Re: **Diagnostic Trouble Codes**
 
My 2000 ZR2 4.3 V6 is throwing this code P0440 - Evaporative Emission Control System and I just failed inspection. What should I be looking for to fix this code? Thanks for the help.

bc_jimmy 12-16-2007 09:17 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by rat (Post 3869426)
Go to south america?

Tons of those here in Panam*, all of them by the Chevy dealer, only S10 gas were Sonoma, when the GMC dealer use to live... up to 2000... the engine was made by MWM (International) good for towing, hard work, slow as f*ck... not as much reliable... very economic... 4.3 can beat the sh+t out of them in more than thousands ways, less in economy :D

btw, any way to check codes manually (without scanner) for OBDII+ Jimmys? :rolleyes: don't have scanner, and those mechanics that have, just for conecting it ask for 35+ if you are lucky, cause they think it's a SUPERHIGHTECH DEVICE... :rant:

rat 12-16-2007 09:55 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by bc_jimmy (Post 4728047)
Tons of those here in Panam*, all of them by the Chevy dealer, only S10 gas were Sonoma, when the GMC dealer use to live... up to 2000... the engine was made by MWM (International) good for towing, hard work, slow as f*ck... not as much reliable... very economic... 4.3 can beat the sh+t out of them in more than thousands ways, less in economy :D

btw, any way to check codes manually (without scanner) for OBDII+ Jimmys? :rolleyes: don't have scanner, and those mechanics that have, just for conecting it ask for 35+ if you are lucky, cause they think it's a SUPERHIGHTECH DEVICE... :rant:

No, you need some sort of scanner. The price is coming way down on the very simple ones, like this:
http://cgi.ebay.com/ebaymotors/ENHAN...spagenameZWDVW
http://cgi.ebay.com/ebaymotors/Car-S...spagenameZWDVW

bc_jimmy 12-16-2007 11:15 PM

Re: **Diagnostic Trouble Codes**
 
Good to know, by the moment a simple one will do the job, thanks for that!

layin20's 12-28-2007 12:01 PM

Re: **Diagnostic Trouble Codes**
 
I'm getting codes P0102 and P1133 what do they mean?

94s-dime 01-22-2008 10:38 PM

Re: **Diagnostic Trouble Codes**
 
I have a 94 s-10 with the 4.3L engine code Z. i am getting a 35 - Idle Air Control (IAC) System code and it only comes on when my truck is idling hence the code. the problem is i have no idea what the idle air control system is and how the heck am i supposed to fix this problem? does anyone know what the IAC system is and how i can fix it??

moriskod 04-13-2008 06:36 PM

Re: **Diagnostic Trouble Codes**
 
I have a 92 S10 Blazer. Engine runs fine until it gets warmed up, I shut down then restart. I will be driving along and it will "studder", and lose power. Check engine light will come on. When I retrieve the code it is code 41. Having a little trouble getting information on that code. On this site it says 41 is "camshaft sensor circuit" but I'm not sure the 92 has this?

z06s10 04-13-2008 11:17 PM

Re: **Diagnostic Trouble Codes**
 
guys im getting three codes P1133, P0133,P0440 on a 97 2.2 s-10 I have taken to shop 4 times and seems they keep trying to put gaskets and seal my heads saying that it was exhaust leak and its fixed but yet I cont have problems. Is this the 02 sensor and should that solve this snowballing problem. Truck runs but low performance and seem to have low backpressure linking to a obvious exhaust leak and even sound like one but with that I am soooo confused as to how it could be a 02 sensor . Any help or advice would be great.If you could post most replies in PM that would be great

ryanmooney 05-26-2008 08:19 PM

Re: **Diagnostic Trouble Codes**
 
i got a code P0446 - Evaporative Emission Control System Vent Control Circuit the guy at autozone asked if my gas cap was tight and it was should i just go out and buy a new gas cap or what should be doe fill me in i'm sick of that orange light always being on

Yogi 05-27-2008 01:04 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ryanmooney (Post 5275464)
i got a code P0446 - Evaporative Emission Control System Vent Control Circuit the guy at autozone asked if my gas cap was tight and it was should i just go out and buy a new gas cap or what should be doe fill me in i'm sick of that orange light always being on

Yes, buy a new gas cap first - possible easy solution. If that doesn't fix it, Click here.

Yogi 06-02-2008 10:42 AM

Re: **Diagnostic Trouble Codes**
 
Some more good info from another post. This applies to OBD1 vehicles when checking by the paperclip method:
Quote:

Originally Posted by bg's (Post 5292564)
The ECM will flash for each digit. example code 12 would be 1 flash a delay then
2 flashes = 12. It will do this in 3 consecutive phases. 12.12.12. Then if you
have set a code for example 43 it will delay a bit after the final 12 and flash
4 flashes for the num 4 then 3 flashes for 3 quickly each time for 3 consecutive
times = code 43. Then there is a delay until either another code will be displayed. >

**** ***. **** ***. **** ***. next code or final code

If there is another code say 24 you would get 2 flashes quickly and then 4
flashes quickly 3 consecutive times. This = code 24. >

** ****. ** ****. ** ****. next code or final code.

Finally when all the codes have been flashed OR no codes are present, you
should get a final code of 55. 5 flashes quickly followed by another 5 flashed
quickly = 55 and then you've read all the codes that wereset through the ck
eng light. 55 means end of code transfer. >

***** *****. ***** *****. ***** *****. done. Have a beer and consider your options..

Simple, huh.


mcdanida 07-02-2008 09:30 AM

Re: **Diagnostic Trouble Codes**
 
Blazee, you sir, are the MAN for posting these trouble codes! Thanks so much!

Now I must figure what my SES light code is for my 2003 S-10? It came on this morning when I abruptly stopped in traffic, almost rear-ending somebody.

Any guesses out there?

Yogi 07-02-2008 12:13 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by mcdanida (Post 5380794)
Blazee, you sir, are the MAN for posting these trouble codes! Thanks so much!

Now I must figure what my SES light code is for my 2003 S-10? It came on this morning when I abruptly stopped in traffic, almost rear-ending somebody.

Any guesses out there?

If it has the secondary air injection system, that would be my guess.

mcdanida 07-02-2008 12:24 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Yogi (Post 5381081)
If it has the secondary air injection system, that would be my guess.

BINGO Yogi, the error code was P0410 - Secondary Air Injection System. Is there anything I should worry about? I've reset the SES light and the error hasn't repeated yet. Would this be common in a situation such as mine, creating maybe a false error?

Yogi 07-02-2008 12:30 PM

Re: **Diagnostic Trouble Codes**
 
It's not likely a false error. Those systems have definite problems. Water accumulates and corrodes the check valve and the pump. Do an advanced search on Google for "secondary air system" on S10Forum.com and that should give you the info you need.

mcdanida 07-03-2008 07:41 AM

Re: **Diagnostic Trouble Codes**
 
Yogi, while I have you here, I want to ask another question - maybe you can direct me to a better forum? Or know the answer yourself. My A/C works GREAT! Maybe too good to be honest; the vent air is pumping a very cold 39F.

There is a problem I think. The accumulator/dryer is building way too much frost, from 1/16" to 1/8" of ice. It travels into the evaporator which is covered so I'm not sure what the ice build looks like on it, I assume about the same?

I tested the pressure and it's a good 30 psi (spec is 25-44 psi). I am in a very humid and warm environment (Virginia), so condesnation is expected. I have been told I want the dryer to sweat real nice, but not freeze.

I've been told a number of diagnoses, low freon, overcharge, thermal clutch switch, etc. It is true I do not see/hear the compressor cycle or clutch engaging/disengaging, so I assume a constant "on", which makes sense to me. I also notice a "squeek" from my serpentine when A/C is on and I start moving from a complete stop - wonder if that's some type of resistance on the compressor pulley for whatever reason?

Anyway, your thoughts? Is this a "don't fix it if it ain't broken" problem?

Yogi 07-03-2008 10:19 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by mcdanida (Post 5383453)
Yogi, while I have you here, I want to ask another question - maybe you can direct me to a better forum? Or know the answer yourself. My A/C works GREAT! Maybe too good to be honest; the vent air is pumping a very cold 39F.

There is a problem I think. The accumulator/dryer is building way too much frost, from 1/16" to 1/8" of ice. It travels into the evaporator which is covered so I'm not sure what the ice build looks like on it, I assume about the same?

I tested the pressure and it's a good 30 psi (spec is 25-44 psi). I am in a very humid and warm environment (Virginia), so condesnation is expected. I have been told I want the dryer to sweat real nice, but not freeze.
I've been told a number of diagnoses, low freon, overcharge, thermal clutch switch, etc. It is true I do not see/hear the compressor cycle or clutch engaging/disengaging, so I assume a constant "on", which makes sense to me. I also notice a "squeek" from my serpentine when A/C is on and I start moving from a complete stop - wonder if that's some type of resistance on the compressor pulley for whatever reason?

Anyway, your thoughts? Is this a "don't fix it if it ain't broken" problem?

The accumulator should sweat, not freeze. Seems like a frozen accumulator would have a lower pressure than 30#. Comp. clutch should be cycling also. Definitely needs to be fixed. I would say it's a bad low pressure switch, or overcharged. I used to work on R12 systems, but I'm no expert on R134. You might try posting in the S-10 section.

mcdanida 07-03-2008 12:24 PM

Re: **Diagnostic Trouble Codes**
 
Thanks Yogi, I suspected it could be the pressure switch. Question: do I have to evacuate the system in order to swap the pressure switch?

I also notice belt squeeking while A/C is running, but not while turned off, that tells me there's resistance at the clutch/compressor pulley? I'm hoping NOT to replace the compressor.

Something also funny, the system sweats PERFECTLY as it should when I run the MAX A/C? I have no problem doing that in this heat!

Yogi 07-03-2008 02:07 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by mcdanida (Post 5384049)
Thanks Yogi, I suspected it could be the pressure switch. Question: do I have to evacuate the system in order to swap the pressure switch?

I also notice belt squeeking while A/C is running, but not while turned off, that tells me there's resistance at the clutch/compressor pulley? I'm hoping NOT to replace the compressor.

Something also funny, the system sweats PERFECTLY as it should when I run the MAX A/C? I have no problem doing that in this heat!

The pressure switch is on a schrader valve (like a tire stem) so you don't have to evacuate to replace it.

Squeaking belt sounds like an overload for some reason.

It's sweating on Max A/C? I would expect that if it were freezing that it would freeze on Max A/C. When does it freeze?

Edit : We're mucking up the sticky on diagnostic trouble codes with a lot of b.s. about A/C. Why don't you start a new thread in S10 section and pm me when you do.

mcdanida 07-04-2008 08:40 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Yogi (Post 5384392)
The pressure switch is on a schrader valve (like a tire stem) so you don't have to evacuate to replace it.

Squeaking belt sounds like an overload for some reason.

It's sweating on Max A/C? I would expect that if it were freezing that it would freeze on Max A/C. When does it freeze?

Edit : We're mucking up the sticky on diagnostic trouble codes with a lot of b.s. about A/C. Why don't you start a new thread in S10 section and pm me when you do.

Yeah Yogi, I didn't mean to go off track in here, I started a new thread:

http://www.s10forum.com/forum/f137/a...-10-ls-359456/

lesterl 07-06-2008 11:00 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Yogi (Post 5294391)
Some more good info from another post. This applies to OBD1 vehicles when checking by the paperclip method:

Yogi, I thought OBD1 flashed 12 again 3x to start over/ end the codes in memory list?

Yogi 07-06-2008 01:08 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by lesterl (Post 5390001)
Yogi, I thought OBD1 flashed 12 again 3x to start over/ end the codes in memory list?

The info that I copied does look suspicious. According to the list, code 55 is a faulty ECM. I'll see if I can get BG's to clarify.

bg's 07-06-2008 05:04 PM

Re: **Diagnostic Trouble Codes**
 
I need to give a HEADS-UP on the final code for
the code run regarding OBD-1. I stated code 55 down
was the final code. THAT IS INCORRECT. Code
12 x 3
is the START OF THE CODE STREAM
and ENDS WITH CODE 12 X 3 as the final
code
before the code stream runs again.

Sorry bout that. Didn't mean to mess anyone up.
Thanks for letting me know, Y.

mcdanida 07-08-2008 07:41 AM

Re: **Diagnostic Trouble Codes**
 
I am constantly getting the following error:

P0410 - Secondary Air Injection System

It occurs everytime I begin an abrupt stop in my 2003 Chevy S-10 LS, or bogging down in a higher gear.

The SES light is beginning to annoy me and I'm tired of disconnecting neg. terminal for 20 minutes to get rid of light.

Any advice to the fix?

Yogi 07-08-2008 11:50 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by mcdanida (Post 5394910)
I am constantly getting the following error:

P0410 - Secondary Air Injection System

It occurs everytime I begin an abrupt stop in my 2003 Chevy S-10 LS, or bogging down in a higher gear.

The SES light is beginning to annoy me and I'm tired of disconnecting neg. terminal for 20 minutes to get rid of light.

Any advice to the fix?

Do a search for "Secondary air system" in titles only. That will give you plenty of info.

b-shariff 08-14-2008 02:26 PM

code solution
 
hi guys i had a s10 2002 v6 extreme the s10 has the code p0155 and p0128 the p0155 is a sensor but what sensor is and where is and the oder is a tenp of coolant how i can fit this 2 problems thanks and sorry about mi englihs

Yogi 08-14-2008 04:13 PM

Re: code solution
 
Quote:

Originally Posted by b-shariff (Post 5495544)
hi guys i had a s10 2002 v6 extreme the s10 has the code p0155 and p0128 the p0155 is a sensor but what sensor is and where is and the oder is a tenp of coolant how i can fit this 2 problems thanks and sorry about mi englihs

Replace your thermostat and that may fix both codes. The sensor for P0155 is in the exhaust pipe on the passenger side, just downstream from the exhaust manifold. Click here for more info.

BSFL89 02-06-2009 08:54 AM

Re: **Diagnostic Trouble Codes**
 
Didnt realize there was a thread for this. Made a post already in the 2nd gen s10 forum

Ok so here is the deal. I bought a 98 s10 lx off my girlfriends dad for 1500 and it only has 87000 miles and is in really good shape. 5 speed 2.2 L rwd.

Well it was having some trouble starting in the cold so I ended up getting the batter replaced this past weekend. About a week or two before I did that, I got a check engine light on and so I thought it was just the battery. Well after getting it replaced the CEL was still on, so I went to autozone and ran the codes. It spit out five and here is what they are :

p0138 Def- H02S 12 circuit condition (Heated Oxygen sensor) bank 1 sensor 2
1st cause - o2 sensor defective
2nd - running rich/lean
3rd engine misfire conditon
4th fuel pressure high or low fuel pump or pressure regulator

p0341 Def- Cam sensor condition
1st cause - cam sensor defective
2nd cause - check connector and wiring to sensor
3rd cause - engine mechanical condition timing belt or chain out of time
4th cause - cylinder misfire check ignition for faults

p0335 Def - Crankshaft position sensor condition
1st cause - crank sensor defective
2nd cause - check connector and wiring to sensor
3rd cause - check trigger wheel for damage

p0300 Def - Cylinder misfire detected - random cylinders
1st cause - Ignition system fault - spark plug wires coil
2nd cause - vaccum leak
3rd cause - Injector fault
4th cause high or low fuel pressure

p0342 Def - Cam sensor condition
1st cause - cam sensor defective
2nd cause - check connector and wiring
3rd cause - engine mechanical condtion

The guy at autozone said odds are its the 02 sensor, specifically the front one which would be 20-30 to replace, rear being like 80. So I am wondering if anyone can confirm it is the 02 sensor or had similiar problem and what was the cause. He said 02 sensor can throw a bunch of codes.

Thanks for any help, I am a college kid and have limited time and cash, but I am a capable mechanic and can replace/do stuff myself, just not the best at diagnosing problem and dont have enough time to look at everything.

Yogi 02-06-2009 11:10 AM

Re: **Diagnostic Trouble Codes**
 
I would suspect the cam sensor before the O2 sensor. You've got 2 codes for a bad cam sensor and that could cause a missfire that trips the O2 code.

I would try replacing the cam sensor, resetting the PCM, and see how that does.

mcdanida 02-09-2009 10:59 AM

Re: **Diagnostic Trouble Codes**
 
I've now just learned to live with the SES light on at all times. These damn P0441 and other useless codes have caused no operating problems with my S-10. I just use a piece of electrical tape to cover the SES light now.

300man 03-11-2009 11:35 AM

Re: **Diagnostic Trouble Codes**
 
Just purchased a 2001 s10 2.2, 5 spd. Really like the truck, on my way home with it i filled it with 87 octane fuel. About 200 miles into new ownership the SES light comes on. Code reads P0172 System Too Rich. Came on while driving at steady speed of 60mph.

I read and cleared the code yesterday morning. In the afternoon the SES light came back, on my way home from work while gently shifting through the gears. Same P0172 code...truck runs well has a slightly high idle (850 - 900rpm) when fully warmed up but is steady.

When cold it starts well and fast idles at about 1400rpm for about 10 sec and slowly lowers to about 1100 with a slight stumble occasionally. If i then rev the engine using 1/8 - 1/4 throttle it bogs a bit between 1100 rpm and 2000 rpm then will settle back to a 1100rpm fast idle.

I'm thinking vacume leak...throttle body/hoses/intake???? BTW both 02 sensors were replaced and had recent tuneup by former owner.

Please help!

Bill Wheats 03-11-2009 11:39 AM

Re: **Diagnostic Trouble Codes**
 
You should start your own thread.

300man 03-11-2009 11:52 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Bill Wheats (Post 6106613)
You should start your own thread.

ok

bryguy2105 03-19-2009 06:02 PM

Re: **Diagnostic Trouble Codes**
 
New member here. I own a 96 4.3L and my truck had broken down just after a trip I made. The code I'm getting is P1351 and I'm having difficulty finding out exactly where this open circuit is. Any thoughts and or ideas would be greatly appreciated.

lesterl 03-19-2009 08:30 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by bryguy2105 (Post 6129657)
New member here. I own a 96 4.3L and my truck had broken down just after a trip I made. The code I'm getting is P1351 and I'm having difficulty finding out exactly where this open circuit is. Any thoughts and or ideas would be greatly appreciated.

Did you not just read the thread directly above your post?

tystoy 03-26-2009 08:42 PM

Re: **Diagnostic Trouble Codes**
 
so when I get a code 12 on my 94 cpi (vin W) does that mean its showing no codes or I have to wait?

lesterl 03-27-2009 09:18 PM

Re: **Diagnostic Trouble Codes**
 
Code 12 is no pulse from distributor basically (engine is not turning) That is normal in the key on engine off A/B terminals shorted mode. Any OTHER codes will be followed after 3X readout of the code 12, the sequence of codes will progress with each code blinked out 3X and ending in code 12 blinking 3X, now this all applies to OBD1, OBD2 you need a special reader to decipher the datastream, there are some bastardchild OBD1.5's from what I hear and good luck with those as I dont have any clue there.

P.S. the OBD2 readers can be had for under $100 for just a basic reader. I think Harbour Freight carries two for $50, 1 for $89, 1 for $99, and 1 for $119.

tystoy 03-27-2009 09:30 PM

Re: **Diagnostic Trouble Codes**
 
I have the OBD1 that I can get the codes out of with the SES light. I actually get the pleasure of using a test light and back probing the E6 wire from the CPU. I am getting no codes.

supasoulja 08-12-2009 01:48 PM

Re: **Diagnostic Trouble Codes**
 
What should I do If i have a code P0144? 99 astro

lesterl 08-12-2009 06:14 PM

Re: **Diagnostic Trouble Codes**
 
http://service.gm.com/gmspo/mode6/pd...t43WXLD_yE.pdf

Bottom of page 9, looks like it is saying you have a rich condition, either the sensor is faulty or you have a fuel leak in the plenum on that bank.

Kris 01-25-2010 10:05 PM

Re: **Diagnostic Trouble Codes**
 
I need some help. i just got an 83 s10 and after replacing the ignition switch and getting it to start i got a check engine light. i disconnected the battery for about an hour to reset and as soon as i fired it up it came on again. i tried to flash the error code but all it will flash is code 12, i have tried to reset and re flash multiple times and all i get is code 12 ( i have let it flash for 15 sets of code 12. any idea what is going on?

lesterl 01-26-2010 11:23 PM

Re: **Diagnostic Trouble Codes**
 
83 S10 doesnt have electronic controls, care to guess again? Might start a NEW thread.....

2Xtreme 02-16-2010 01:53 AM

Re: **Diagnostic Trouble Codes**
 
I got a C0265...any ideas what it might be

lesterl 02-16-2010 11:05 PM

Re: **Diagnostic Trouble Codes**
 
I did a quick search about that code and found this, it may be helpful, I'd definitely look into it before paying that much for a replacement:

ABS Lamp/Stored DTC's ... ABS lamp illumination, accompanied with stored DTC's C0265, C0201 have affected GM trucks and SUV's from model years 1999-2004. DTC U1041 may also be stored in other modules, due to a loss of communication with the brake [COLOR=blue! important][COLOR=blue! important]control [COLOR=blue! important]module[/COLOR][/COLOR][/COLOR]. The illuminated ABS lamp and stored codes result from a bad EBCM (electronic brake control module) ground. The ground point is different for each application, making it necessary to refer to a wiring diagram or circuit locator. Example: Midsize Utilities=Ground 304, SSR=Ground 400, Full-size Trucks and Utilities=Ground 110. GM has encountered a high return rate of EBCM modules due to bad grounds.


Here's another source with basically the same thing:

ABS light on, DTCs set. Some 1999-2004 midsize and full-size GM pickups and SUVs (full list below) may illuminate the ABS light and store DTC C0201 or C0265 in the ABS computer. In addition, code U1041 may set in other modules or you may encounter lost communication between your scanner and the ABS module.

According to GM, all of these problems are probably due to a bad connection at ABS ground GlK), which you'll find on the frame rail just underneath the driver's-side door. Restoring the integrity of the ground should eliminate all the problems. Here's how to go about it:

Start by getting the truck up in the air. Next, locate ground GIlO at the frame rail. Note that several ground wires may be there, but GIlO is the one with the heaviest wire (12-gauge). Disconnect the ground from the rail and use a "whiz wheel" to clean the area in front of and behind the ground connection. Now get a bolt, two star washers and a nut. Install the bolt, ground connection eyelet and star washer on one side of the rail and the other star washer and nut on the other side. Torque the nut to 79 in.-lbs. To complete the fix, spray the bare frame rail with rubberized undercoating (Part No. 12378398 or equivalent), lower the truck, then conduct a road test to ensure that the ABS light stays out.

FROM AUTOMOTIVEHELPER.COM

HomeGrownCam 03-02-2010 02:14 PM

Re: **Diagnostic Trouble Codes**
 
I have obd1. I jump the aldl and it flash,pause, flash, flash, then pause and flashes some more and so on. Wh*t do I actually count? The totally number of flashes?

RaginInferno 03-02-2010 02:16 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by HomeGrownCam (Post 6824905)
I have obd1. I jump the aldl and it flash,pause, flash, flash, then pause and flashes some more and so on. Wh*t do I actually count? The totally number of flashes?

Code 12 on a GM vehicle verifies that the check engine light/computer diagnostic system is working properly.
It will flash code 12 three times, then it will begin flashing each trouble code, three times starting with the lowest trouble code first, and continuing with each trouble code in memory, increasing numerically.
When all trouble codes in memory have flashed three times, it will start over, (so that you know you're done reading codes) with code 12 again, and you can then remove the jumper.

HomeGrownCam 03-02-2010 03:42 PM

Re: **Diagnostic Trouble Codes**
 
15 - Coolant temperature sensor or circuit/ low temperature indicated - Coolant temperature sensor signal indicates a temperature colder than -36? F for at least 4 seconds after the engine had been running for 2 seconds

That's the code and symptom. What should I look at fixing

lesterl 03-02-2010 10:53 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by RaginInferno (Post 6824909)
Code 12 on a GM vehicle verifies that the check engine light/computer diagnostic system is working properly.
It will flash code 12 three times, then it will begin flashing each trouble code, three times starting with the lowest trouble code first, and continuing with each trouble code in memory, increasing numerically.
When all trouble codes in memory have flashed three times, it will start over, (so that you know you're done reading codes) with code 12 again, and you can then remove the jumper.

Actually the code 12 means that there is no cam signal (which there wont be if the engine isnt running.) But a search for GM OBD1 codes will provide some handy codes for reference.

RaginInferno 03-03-2010 12:47 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by lesterl (Post 6825910)
Actually the code 12 means that there is no cam signal (which there wont be if the engine isnt running.) But a search for GM OBD1 codes will provide some handy codes for reference.


DTC - 12 No distributor reference pulse (diagnostic test active) and will always show exactly as I described above...

lesterl 03-03-2010 10:10 PM

Re: **Diagnostic Trouble Codes**
 
Cam sensor is in the distributor.

RaginInferno 03-04-2010 08:25 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by lesterl (Post 6827704)
Cam sensor is in the distributor.

It will run with the distributor disconnected...the indicator is the tach does'nt work. BTDT

beavis735 03-22-2010 04:04 PM

Re: **Diagnostic Trouble Codes**
 
wat do the other pins do?

ratrace2 03-29-2010 09:21 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by digital_xtreme (Post 3505127)
P0300... been getting that lately... ran seafoam through the engine and the code went away... runs better now also... gotta love seafoam

what is seafoam?
where do you get it?
how/why do you use it??


thanks,

lesterl 03-29-2010 10:36 PM

Re: **Diagnostic Trouble Codes**
 
Seafoam=Cleaner=FIND AT WALMART/PARTS STORE/ETC.

austin hengen 04-16-2010 02:38 PM

Re: **Diagnostic Trouble Codes**
 
ok so i tried this and this is what happened,

flash pause flash flash, and it did this 2 times in a row, so i assume its code 12?

then after that it did

flash flash flash flash pause flash flash, so i think that would be 42? witch would be the est on my 2.8l

but what would be the first code for my 91 2.8l
or am i even reading them correct?

austin hengen 04-16-2010 02:51 PM

Re: **Diagnostic Trouble Codes**
 
never mind i figured it out

HogWinslow 04-29-2010 03:38 AM

Re: **Diagnostic Trouble Codes**
 
I took the OBDII Codes and put them into a downloadable .doc file. That way they can be downloaded and printed off.

Click here for OBDII Codes

Hog

ratrace2 05-03-2010 12:22 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by 2Xtreme (Post 6798639)
I got a C0265...any ideas what it might be

__________________________________________________ ___________

CIRCUIT DESCRIPTION (DTC C0265)
The pump motor relay supplies power to all six solenoid coils (three isolation solenoid coils and three dump solenoid coils) and the motor when the ABS is required. The relay and the six solenoid coils are located within the Electronic Brake Control Module (EBCM) .

CONDITIONS FOR SETTING THE DTC (DTC C0265)
  • The EBCM microprocessor commands the relay on
  • Low voltage exists on all six solenoid driver circuits when high voltage is expected (the solenoid is not energized)
CONDITIONS FOR SETTING THE DTC (DTC C0266)
  • The ABS bulb check is complete
  • High voltage exists on the pump motor driver circuit when all are expected to be low (the relay is not commanded on)
ACTION TAKEN WHEN THE DTC SETS
  • The ABS indicator lamp turns on
  • The ABS disables
DTCs C0265 and C0266 are Ignition Latched DTCs, which indicates that the above actions remain true until the ignition is turned to OFF (even if the cause of the DTC is intermittent).

CONDITIONS FOR CLEARING THE DTC
  • Repair the conditions responsible for setting the DTC
  • Use the Scan Tool Clear DTCs function

shel6977 06-01-2010 09:27 PM

Re: **Diagnostic Trouble Codes**
 
Sorry to keep beating a dead horse here but I have a co265 on a 2001 s10. It ramdomly comes and goes, sometimes it won't come one for a couple weeks and sometimes it will be on for a week straight so I don't know if it is the EBCM or if it is a ground problem. Is there anything else to look for other than a bad ground to rule out a pricey EBCM? Is there only one ground under the drivers door to check? Are there any relays in this circuit to check? Thanks.

hillcogolfer 07-01-2010 01:10 PM

Re: **Diagnostic Trouble Codes**
 
Just some of my own results with some recent "service engine light" episodes....for anyone's benefits in the event you've had similiar things happin....Mine's a '02 Sonoma...w/4.3 --automatic--3.42 Posi rearend....several engine performance boosts...including a (old) Superchips programer (#2575-"Max Micro Tuner"). It's a pretty rapid little truck that I just bought about four months ago. Now has almost 112K miles. ...well cared for by 1st owner...always has had servicing....always used Mobil 1 synthetic engine oil....had a new fuel pump installed last winter.

A few weeks ago I started seeing SE light on....Upon taking it to my long time mechanic it showed a code of: "Misfire on No. 1 cyl". He turned it (the code) off....said it was "kinda strange"...only occasionally misfiring and then only at idle. The truck was running fine so we decided to monitor it....one week later it was back on...so we pulled No 1 plug and it looked kinda weird...slightly burnt electrode and gapped WAY more than the .060 it calls for (more like .085-.090). Result: the code still there though...Next we put on a new plug wire--result-code still there. He then says the injectors might need cleaning so he puts in some "44K" injector cleaner. Note: he (and I) have used this stuff for several years...he swears by it....and this is from a guy that normally doesn't believe that "additives" help anything much. I then take it out on the road and it runs like a beast!....so, I had not even noticed it was NOT running good before....it had seemed okay but it was really helped alot by the new plug in No. 1.

I it run for about a week...long enough to run one tank of gas thru, with that 44K in there...truck ran great (it seemed to run better as the injector cleaner worked thru it)...and just when I was about to need a refill of gas...you guessed it...SE light back on.

Back with mechanic now...he says the next thing to check out would be the distributor, rotor, etc...and if that didn't keep the light off he said he might suspect a vacuum leak in the intake manifold gasket. BUT....I decided to try something else first.....I got out my Superchips programmer and reprogrammed it for it's MAX performance setting....and filled up the tank with Premium fuel (the Superchips is one that requires this fuel for best results....at least this old model does). I thought maybe my SE light could have been indirectly caused by not running premium in it all the time....or maybe by the 10% Ethanol we seem to be stuck with now (here in Texas)...I don't know....these are all just guesses.....

But.....Result: truck is running even faster (got my own little "drag strip" setup out on remote roads for testing)....and also smoooooth...and so far anyway, the light is staying off....but, it has only been four days since I did that last thing. I've had it out on some country roads wailing on it (4500-5000 rpms)....trying to drive it in all conditions....and as I say....so far so good.

This is just info for anybody to gain some feedback on something similiar with theirs....and...I'd like to hear any info anyone else might have on this kinda problem...or on the Superchips model I have....or on the 44K injector cleaner....or anything related. Thanks.

lesterl 07-01-2010 11:49 PM

Re: **Diagnostic Trouble Codes**
 
My buddys 96 Firebird threw a missfire code occasionally at idle, ended up he had a cracked ring. He dumped some money into the motor (more than just stock stuff!) and now he really likes the car.

hillcogolfer 08-19-2010 03:30 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by hillcogolfer (Post 7030569)
Just some of my own results with some recent "service engine light" episodes....for anyone's benefits in the event you've had similiar things happin....Mine's a '02 Sonoma...w/4.3 --automatic--3.42 Posi rearend....several engine performance boosts...including a (old) Superchips programer (#2575-"Max Micro Tuner"). It's a pretty rapid little truck that I just bought about four months ago. Now has almost 112K miles. ...well cared for by 1st owner...always has had servicing....always used Mobil 1 synthetic engine oil....had a new fuel pump installed last winter.

A few weeks ago I started seeing SE light on....Upon taking it to my long time mechanic it showed a code of: "Misfire on No. 1 cyl". He turned it (the code) off....said it was "kinda strange"...only occasionally misfiring and then only at idle. The truck was running fine so we decided to monitor it....one week later it was back on...so we pulled No 1 plug and it looked kinda weird...slightly burnt electrode and gapped WAY more than the .060 it calls for (more like .085-.090). Result: the code still there though...Next we put on a new plug wire--result-code still there. He then says the injectors might need cleaning so he puts in some "44K" injector cleaner. Note: he (and I) have used this stuff for several years...he swears by it....and this is from a guy that normally doesn't believe that "additives" help anything much. I then take it out on the road and it runs like a beast!....so, I had not even noticed it was NOT running good before....it had seemed okay but it was really helped alot by the new plug in No. 1.

I it run for about a week...long enough to run one tank of gas thru, with that 44K in there...truck ran great (it seemed to run better as the injector cleaner worked thru it)...and just when I was about to need a refill of gas...you guessed it...SE light back on.

Back with mechanic now...he says the next thing to check out would be the distributor, rotor, etc...and if that didn't keep the light off he said he might suspect a vacuum leak in the intake manifold gasket. BUT....I decided to try something else first.....I got out my Superchips programmer and reprogrammed it for it's MAX performance setting....and filled up the tank with Premium fuel (the Superchips is one that requires this fuel for best results....at least this old model does). I thought maybe my SE light could have been indirectly caused by not running premium in it all the time....or maybe by the 10% Ethanol we seem to be stuck with now (here in Texas)...I don't know....these are all just guesses.....

But.....Result: truck is running even faster (got my own little "drag strip" setup out on remote roads for testing)....and also smoooooth...and so far anyway, the light is staying off....but, it has only been four days since I did that last thing. I've had it out on some country roads wailing on it (4500-5000 rpms)....trying to drive it in all conditions....and as I say....so far so good.

This is just info for anybody to gain some feedback on something similiar with theirs....and...I'd like to hear any info anyone else might have on this kinda problem...or on the Superchips model I have....or on the 44K injector cleaner....or anything related. Thanks.

Just an update... we never did need to go to the next step we were gonna try (replacing the distributor cap and rotor) as....the light has stayed off now for over 1,500 miles....running great....and so...we're going on the theory that the 44K (injector cleaner) finally got around to cleaning things up to where there was no obstruction of fuel flow. But....I think the minute the service engine light reappears and the code says "Misfire)....I'm gonna replace that cap.

Stinkbait 04-03-2011 03:43 PM

Re: **Diagnostic Trouble Codes**
 
When I plug a scanner tool or a paper clip into the plug in, when I turn the key to the "on"position, I get no codes. My shift light comes on(truck is a 5 speed in nuetral), my check gauges light comes on, and service engine soon. None of them blink. What could this mean?

94 s10 tbi v6 obd1 truck will not start. Have limited it to a bad sensor (but can't get a code to check). Or ignition(have already changed coil, plugs are fairly new as so the spark plug wires, and new destributor cap/button). Anyone with any ideas?

lesterl 04-05-2011 12:55 AM

Re: **Diagnostic Trouble Codes**
 
Check fuses for ECM......

bigdaddykane93 04-22-2011 09:27 AM

Re: **Diagnostic Trouble Codes**
 
what exactly are "manufacture specific" codes? and why are they specific? im getting P700 and P1100 on my 95 truck. anyone know?

lesterl 04-23-2011 09:57 PM

Re: **Diagnostic Trouble Codes**
 
1995 is a bastard year OBD 1.5.......

Mickeymouse 06-05-2011 05:20 PM

Re: **Diagnostic Trouble Codes**
 
2 Attachment(s)
Hi guys...

I've got a trouble code that I can't figure out...

When the SES light comes on, I take my computer and hook it up with the OBD II and connect it. All gauges comes on in my computer and the oil lamp shows that there is little oil in the engine. But it dosen't show on the cars gauges.

When I want to read the trouble codes it shows that its 1 trouble code
and it says 0 4: 0. Every time it says exactly the same. When it clear the trouble code the oil lamp on the computer disapears. And the SES light disapears. When I used the car for a couple of hours/days the SES light comes on again and there is that same stupid code again.

I've got oilpreassure and the correct amount of oil is in the engine.

So I wonder whats that code since I cant find it anywere?

Am I missing something? or what??

The stuff I'm using is
OBD-DIAG® 4000
www.odb-diag.com

Please a little help or suggestions

Regards Michael

00s10xtreme 10-30-2011 09:40 PM

Re: **Diagnostic Trouble Codes**
 
I need help, I have a 00 S10 xtreme. Service Engine light came on and code is P0171. "Fuel Trim Bank One" What does this mean and how can I fix it?

burned 10-30-2011 10:02 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by 00s10xtreme (Post 7613212)
I need help, I have a 00 S10 xtreme. Service Engine light came on and code is P0171. "Fuel Trim Bank One" What does this mean and how can I fix it?

Bank one is lean. Check around PCV valve, it may be leaking on one of those hoses attached to it.

burned 10-30-2011 10:34 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Mickeymouse (Post 7464951)
Hi guys...

I've got a trouble code that I can't figure out...

When the SES light comes on, I take my computer and hook it up with the OBD II and connect it. All gauges comes on in my computer and the oil lamp shows that there is little oil in the engine. But it dosen't show on the cars gauges.

When I want to read the trouble codes it shows that its 1 trouble code
and it says 0 4: 0. Every time it says exactly the same. When it clear the trouble code the oil lamp on the computer disapears. And the SES light disapears. When I used the car for a couple of hours/days the SES light comes on again and there is that same stupid code again.

I've got oilpreassure and the correct amount of oil is in the engine.

So I wonder whats that code since I cant find it anywere?

Am I missing something? or what??

The stuff I'm using is
OBD-DIAG® 4000
www.odb-diag.com

Please a little help or suggestions

Regards Michael

What hardware you using? I think that check engine code your getting is in Hex

Mickeymouse 10-31-2011 04:13 PM

Re: **Diagnostic Trouble Codes**
 
Sorry now you lost me??

Why would it shift to Hex suddely??

Had another trouble code last year, cant remember what it was put i came out just like i should P??? something..

The hardware i in the link orginal link..

THanks Michael

burned 10-31-2011 08:01 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Mickeymouse (Post 7613862)
Sorry now you lost me??

Why would it shift to Hex suddely??

Had another trouble code last year, cant remember what it was put i came out just like i should P??? something..

The hardware i in the link orginal link..

THanks Michael

yeah not sure. I thought you may have been reading mode 6 data. That is in hex format

00s10xtreme 11-01-2011 08:58 PM

Re: **Diagnostic Trouble Codes**
 
So I checked the PCV vualve and it's tight and sturdy. Auto Zone printed off a list of "What it could be" so I might just change the MAF sensor this week and see if that works. Would this pickup have the same kind of power as a 1997 4 door blazer 2wd?

burned 11-02-2011 09:34 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by 00s10xtreme (Post 7615263)
So I checked the PCV vualve and it's tight and sturdy. Auto Zone printed off a list of "What it could be" so I might just change the MAF sensor this week and see if that works. Would this pickup have the same kind of power as a 1997 4 door blazer 2wd?

Before replacing an expensive part like that, take it apart and clean it with MAF cleaner or electrical contact cleaner.

How to clean a MAF:
http://easyautodiagnostics.com/gm_ma...f_sensor_1.php

00s10xtreme 11-02-2011 11:03 PM

Re: **Diagnostic Trouble Codes**
 
I cleaned it and it still had no balls, but after last night of checking the PCV valve and driving it last night it has the power it should have. It will spin the tires from a dead stop. This morning i ran it up to 95 MPH with no problem, before it would act like it couldent even to 80 MPH. IDK if its a for sure fix, but its running great right now. Thank guys for the info and help.

buildinonabudget 01-11-2012 10:44 PM

Re: **Diagnostic Trouble Codes**
 
Well i have a 94 2.2 . It
Threw up a code 12 and 14.. coolant temp sensor reading high temp.. replaced the sensor and it went from being accurate on the gauges to doing what it is described in this thread as just jumping to 285 degrees. Is also running in
diagnostic diagnostic mode and frankly I am quite stuck on this. Not sure how an old sensor can read accurately but the new one would do as described on its code thrown.

'02LS4.3 09-27-2012 08:31 PM

Re: **Diagnostic Trouble Codes**
 
4.3L p0440 Evap code, rule out gas cap it's brand new. What should I check next to pinpoint what's causing this code?

♣ MiniDutch ♠ 01-19-2013 07:12 PM

Re: **Diagnostic Trouble Codes**
 
Hey guys, i'm hoping someone here can answer my question. First off i Have a 95 Chevy S10 4.3L V6 Vin:W CPI.

I've recently changed both knock sensors, TPS, MAP Sensor, Distributor Cap, Distributor Rotor, Spark Plugs, Spark Plug wires. The truck also has a brand new cooling system ( water pump, thermostat, radiator). My car idles perfectly when its parked, the RPM's stay around 800.... Lately when i'm driving the truck from 40 MPH - 60 MPH my RPM's start to drop randomly, and the truck will start to bog out. But as soon as i floor it the problem will go away and slowly start to come back as i cruise around 75 MPH.

My service engine light came on, i plugged the computer on to read the codes and this is what i got
** P0326 - Knock Sensor 1 Circuit Range/Performance (Bank 1) **

I don't understand because both my knock sensors are less than a month old.:(

i don't know where else to turn, I've had 2 mechanics look at the truck and they have no clue what it could be.

I hope someone could shed some light on my situation.
Thanks in advance

ratrace2 01-19-2013 08:03 PM

Re: **Diagnostic Trouble Codes**
 
Look at your Oxygen sensors. The truck is running lean when at low throttle because it is in open look, i.e. the oxygen sensors are controlling the short and long term fuel trim. When you stomp on the gas the truck disregards the oxygen sensors and just feeds the engine fuel.

Short and long, check your O2 sensors.

♣ MiniDutch ♠ 01-19-2013 08:44 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8059042)
Look at your Oxygen sensors. The truck is running lean when at low throttle because it is in open look, i.e. the oxygen sensors are controlling the short and long term fuel trim. When you stomp on the gas the truck disregards the oxygen sensors and just feeds the engine fuel.

Short and long, check your O2 sensors.

ok, i'll go ahead and check the O2 sensors. Is there any way of me testing the O2 sensors to see if their faulty?? I'm no mechanic and I've never dealt with O2 Sensors before.

ratrace2 01-19-2013 09:09 PM

Re: **Diagnostic Trouble Codes**
 
you have to get a scanner/scan tool to look at the fuel trim and o2 voltage.

♣ MiniDutch ♠ 01-20-2013 11:11 AM

Re: **Diagnostic Trouble Codes**
 
2 Attachment(s)
Quote:

Originally Posted by ratrace2 (Post 8059147)
you have to get a scanner/scan tool to look at the fuel trim and o2 voltage.

I don't have a scanner, so i went to my local Advance Auto Parts, i have a friend that works there and he attached the scanner to my car. I'm not to sure if these are the Fuel trim levels. On the images attached you'll see ST FTRIM and LT FTRIM. Is this what you were telling me to check??

Sorry for all the questions, like i said I'm no mechanic. Everything i know about car's i learned through years of trial and error. Thanks again

ratrace2 01-20-2013 11:48 AM

Re: **Diagnostic Trouble Codes**
 
Looks like it's taking too much fuel away and retarding ignition.
You need the book for this make/model/year of engine (I have a 2.2).

That looks like -8 and - 15.
both should add up to 0 (zero) that's a balance of 14.1 A/F (air/fuel ratio).

When you cats stop working they don't tell the ECM to signal the injectors to pump less fuel, or sometimes more fuel.

You are still going to have to check the voltage of the O2 sensor, you need to see the oscillation of it's signal to determine if it's working properly

♣ MiniDutch ♠ 01-20-2013 12:26 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8059570)
Looks like it's taking too much fuel away and retarding ignition.
You need the book for this make/model/year of engine (I have a 2.2).

That looks like -8 and - 15.
both should add up to 0 (zero) that's a balance of 14.1 A/F (air/fuel ratio).

When you cats stop working they don't tell the ECM to signal the injectors to pump less fuel, or sometimes more fuel.

You are still going to have to check the voltage of the O2 sensor, you need to see the oscillation of it's signal to determine if it's working properly

I have the book for this year make and model, what should I look under??

ratrace2 01-20-2013 02:04 PM

Re: **Diagnostic Trouble Codes**
 
1.Timing advance
2. coolant temp, at 205 you are running a little hot
watch the O2sensor B1 S1 voltage it should fluctuate rather fast. between -0.07 and .07
and 0.75 and 1.0.......somewhere around twice a second.....if it's not it's bad.

Also: where it says "Fuel System 1 CLSD------this is closed loop, try to get it into open loop. That is when the O2 sensors don't tell the ECM to control fuel. if it runs pretty good in open loop and the timing advance run to about positive 22 degrees of timing (check you book) then you (90% sure) bad O2 sensors in Bank 1 S1 position (check your book).

IAT temp 102..........I forgot you are in Miami Fla.

♣ MiniDutch ♠ 01-20-2013 03:38 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8059645)
1.Timing advance
2. coolant temp, at 205 you are running a little hot
watch the O2sensor B1 S1 voltage it should fluctuate rather fast. between -0.07 and .07
and 0.75 and 1.0.......somewhere around twice a second.....if it's not it's bad.

Also: where it says "Fuel System 1 CLSD------this is closed loop, try to get it into open loop. That is when the O2 sensors don't tell the ECM to control fuel. if it runs pretty good in open loop and the timing advance run to about positive 22 degrees of timing (check you book) then you (90% sure) bad O2 sensors in Bank 1 S1 position (check your book).

IAT temp 102..........I forgot you are in Miami Fla.

OK so I'm having an issue locating the O2 sensors. I was told that this truck has 4 O2 sensors. But I'm only able to locate 2 of them. The one on the Y pipe and the other one which is after the Catalytic. Where are the other 2? I've looked all over and I'm unable to locate it.

♣ MiniDutch ♠ 01-20-2013 04:53 PM

Re: **Diagnostic Trouble Codes**
 
Here's a video and pictures of the O2 Sensors that I've found on the S10. It seems to only have two O2 Sensors. I saw an all data diagram of the O2 sensor layout and it say's to have 4. Then again I'm only able to locate 2 of them.

Video Link is below.

http://youtu.be/DBoybRJPR6Y

http://i50.tinypic.com/a1h6vs.jpg

http://i48.tinypic.com/14r9e0.jpg

♣ MiniDutch ♠ 01-20-2013 04:55 PM

Re: **Diagnostic Trouble Codes**
 
Here's a video and pictures of the O2 Sensors that I've found on the S10. It seems to only have two O2 Sensors. I saw an all data diagram of the O2 sensor layout and it say's to have 4. Then again I'm only able to locate 2 of them.

Video Link is below.

http://youtu.be/DBoybRJPR6Y

This one is after the Catalytic.
http://i50.tinypic.com/a1h6vs.jpg

This one is before the Catalytic.
http://i48.tinypic.com/14r9e0.jpg


Double Post Sorry

Una Perlana 01-20-2013 05:03 PM

Re: **Diagnostic Trouble Codes**
 
^ Seems to me like they swapped out the manifolds for a different year s10.

ratrace2 01-20-2013 05:08 PM

Re: **Diagnostic Trouble Codes**
 
You found them. The other two should be further down the exhaust system toward the mufflers.

In all honesty, you should let someone do this for you. My experience says that these O2 sensors can be a real headache to change.

I have had to drop the whole exhaust system and cut them out with a cutting tool to get them out. Other, come out not so hard.

♣ MiniDutch ♠ 01-20-2013 05:13 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8059781)
You found them, good luck getting them out, they look super corroded.

ok, so i should only have two O2 sensors correct? Cause someone was telling me that i should have 4??

ratrace2 01-20-2013 05:17 PM

Re: **Diagnostic Trouble Codes**
 
95 4.2: what does the book say?

Go under there and look for yourself!! Just trace each side of the exhaust system and see if you see two more O2s's.

Actually, if you crawl under your truck and look up toward the exhaust manifold, you should find the other two

AWD V8 01-20-2013 05:25 PM

Re: **Diagnostic Trouble Codes**
 
First off your 95 should have 3 O2 sensors, mine did. You will have one on each branch of the Y-pipe, and one after the cat. The one after the cat is the monitor for the cat, it does not influence the running of the engine.

If you are getting knock sensor codes it can also be mechanical knock as well. As the mixture is lean during cruise the EGR must be working properly to keep the combustion temp down to reduce the risk of knock. You may have an EGR flow problem that has not got to the point of throwing a code for the EGR. The flow needs to be nearly completely blocked before you get an EGR Flow code.
I would remove the EGR valve and start up the engine. It will rev to about 2500 rpm because without the EGR attached to the intake manifold you will have a large air leak, but that's OK for now.

With it running you should have a good amount of exhaust blowing out the exhaust port of the EGR mounting. If it's not load and blowing hard then the intake is clogged with carbon. I had to remove the intake from my 95 Jimmy to clear out the passages, nearly blocked. I only had a whisper of exhaust coming out. So even if the ERG is opening as it should you get next to no flow, so the combustion temp goes up and with the leaning at cruise you get engine knock.

Other things that increase the risk of engine knock include; T-stat allowing engine to run too hot, clogged rad or crap coating the block & heads (common Dexcool problem), clogged exhaust (cat or kinked pipe), carbon build up from oil consumption or high miles.

O2 sensor operation can be checked by adding a fuel source, like a non-lite propane torch stuck in a brake booster hose or creating an air leak, like allowing air in at the booster hose. While watching the O2 voltage you will see the voltage spike up with added fuel, or drop down with an air leak. The PCM will compensate quickly and may be able to correct the situation if the added fuel or air is not too great.

This is a screenshot of my Torque app reading a normal O2 sensor and the short term fuel trim reading.
http://i407.photobucket.com/albums/p.../o2-normal.png

On coast the O2 voltage will drop to zero as the PCM shuts off the injectors, shown in the graph, and the fuel trims goes to zero as the PCM is ignoring the O2 sensor at this time.
http://i407.photobucket.com/albums/p...e/o2-coast.png


Fuel trims will fluctuate, this is normal. They should however switch across zero equally in an ideal world. Plus or minus single digit is acceptable.

♣ MiniDutch ♠ 01-20-2013 06:33 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8059788)
95 4.2: what does the book say?

Go under there and look for yourself!! Just trace each side of the exhaust system and see if you see two more O2s's.

Actually, if you crawl under your truck and look up toward the exhaust manifold, you should find the other two

i just posted a video of me crawling under the truck. I don't see anymore O2 sensors. how would an O2 sensor influence my truck running lean??

ratrace2 01-20-2013 06:46 PM

Re: **Diagnostic Trouble Codes**
 


ratrace2 01-20-2013 07:02 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ♣ MiniDutch ♠ (Post 8059853)
i just posted a video of me crawling under the truck. I don't see anymore O2 sensors. how would an O2 sensor influence my truck running lean??

Where???

♣ MiniDutch ♠ 01-20-2013 07:38 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8059884)
Where???

look at the post where i posted the pictures. the link to the video is above the first picture.

♣ MiniDutch ♠ 01-20-2013 08:21 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by AWD V8 (Post 8059801)
First off your 95 should have 3 O2 sensors, mine did. You will have one on each branch of the Y-pipe, and one after the cat. The one after the cat is the monitor for the cat, it does not influence the running of the engine.

If you are getting knock sensor codes it can also be mechanical knock as well. As the mixture is lean during cruise the EGR must be working properly to keep the combustion temp down to reduce the risk of knock. You may have an EGR flow problem that has not got to the point of throwing a code for the EGR. The flow needs to be nearly completely blocked before you get an EGR Flow code.
I would remove the EGR valve and start up the engine. It will rev to about 2500 rpm because without the EGR attached to the intake manifold you will have a large air leak, but that's OK for now.

With it running you should have a good amount of exhaust blowing out the exhaust port of the EGR mounting. If it's not load and blowing hard then the intake is clogged with carbon. I had to remove the intake from my 95 Jimmy to clear out the passages, nearly blocked. I only had a whisper of exhaust coming out. So even if the ERG is opening as it should you get next to no flow, so the combustion temp goes up and with the leaning at cruise you get engine knock.

Other things that increase the risk of engine knock include; T-stat allowing engine to run too hot, clogged rad or crap coating the block & heads (common Dexcool problem), clogged exhaust (cat or kinked pipe), carbon build up from oil consumption or high miles.

O2 sensor operation can be checked by adding a fuel source, like a non-lite propane torch stuck in a brake booster hose or creating an air leak, like allowing air in at the booster hose. While watching the O2 voltage you will see the voltage spike up with added fuel, or drop down with an air leak. The PCM will compensate quickly and may be able to correct the situation if the added fuel or air is not too great.

This is a screenshot of my Torque app reading a normal O2 sensor and the short term fuel trim reading.
http://i407.photobucket.com/albums/p.../o2-normal.png

On coast the O2 voltage will drop to zero as the PCM shuts off the injectors, shown in the graph, and the fuel trims goes to zero as the PCM is ignoring the O2 sensor at this time.
http://i407.photobucket.com/albums/p...e/o2-coast.png


Fuel trims will fluctuate, this is normal. They should however switch across zero equally in an ideal world. Plus or minus single digit is acceptable.

Thank you so much for the information. For some reason i had the feeling that my injectors might have been clogged with some gunk, because if i remember correctly this issue started happening after i had bought a bad batch of fuel from a Hess Gas Station. I went to my local auto-parts and purchased some Sea-Foam. I poured half the bottle into the gas tank and the other half into the master cylinder. My truck started to smoke and the front of my house was filled with white smoke. I guess the Sea-Foam was cleaning out all the gunk in the injector and EGR. I test drove the car in the highway again, and it has yet to give me the same problem, I don't see it bogging out. The service engine light has been erased with a computer and it has not come back on.

♣ MiniDutch ♠ 01-21-2013 07:19 PM

Re: **Diagnostic Trouble Codes**
 
ok so apparently the problem has returned -__-

♣ MiniDutch ♠ 01-24-2013 05:46 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by AWD V8 (Post 8059801)
First off your 95 should have 3 O2 sensors, mine did. You will have one on each branch of the Y-pipe, and one after the cat. The one after the cat is the monitor for the cat, it does not influence the running of the engine.

If you are getting knock sensor codes it can also be mechanical knock as well. As the mixture is lean during cruise the EGR must be working properly to keep the combustion temp down to reduce the risk of knock. You may have an EGR flow problem that has not got to the point of throwing a code for the EGR. The flow needs to be nearly completely blocked before you get an EGR Flow code.
I would remove the EGR valve and start up the engine. It will rev to about 2500 rpm because without the EGR attached to the intake manifold you will have a large air leak, but that's OK for now.

With it running you should have a good amount of exhaust blowing out the exhaust port of the EGR mounting. If it's not load and blowing hard then the intake is clogged with carbon. I had to remove the intake from my 95 Jimmy to clear out the passages, nearly blocked. I only had a whisper of exhaust coming out. So even if the ERG is opening as it should you get next to no flow, so the combustion temp goes up and with the leaning at cruise you get engine knock.

Other things that increase the risk of engine knock include; T-stat allowing engine to run too hot, clogged rad or crap coating the block & heads (common Dexcool problem), clogged exhaust (cat or kinked pipe), carbon build up from oil consumption or high miles.

O2 sensor operation can be checked by adding a fuel source, like a non-lite propane torch stuck in a brake booster hose or creating an air leak, like allowing air in at the booster hose. While watching the O2 voltage you will see the voltage spike up with added fuel, or drop down with an air leak. The PCM will compensate quickly and may be able to correct the situation if the added fuel or air is not too great.

This is a screenshot of my Torque app reading a normal O2 sensor and the short term fuel trim reading.
http://i407.photobucket.com/albums/p.../o2-normal.png

On coast the O2 voltage will drop to zero as the PCM shuts off the injectors, shown in the graph, and the fuel trims goes to zero as the PCM is ignoring the O2 sensor at this time.
http://i407.photobucket.com/albums/p...e/o2-coast.png


Fuel trims will fluctuate, this is normal. They should however switch across zero equally in an ideal world. Plus or minus single digit is acceptable.

Man I just changed the EGR valve, and guess what.... I'm still having the same issue. Except this time, the Service Engine Light went away. What gives ??? lol

AWD V8 01-24-2013 07:16 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ♣ MiniDutch ♠ (Post 8064651)
Man I just changed the EGR valve, and guess what.... I'm still having the same issue. Except this time, the Service Engine Light went away. What gives ??? lol

Can you graph the O2 with scanner?

When up to temp, on a clear section of road go WOT for at least several seconds, longer is better. If possible a hill where the engine can stay under load for a while without picking up much speed.

A few seconds after WOT the PCM will ignore the O2 reading and follow a programmed fuel map. At that point the fuel mixture will be richer than the O2 can follow, BUT the O2 will still display voltage, it will just max out. THIS is what you need to see, the O2 voltage MUST be pinned at .9 volts, any lower and the engine is running lean. This could be a weak fuel pump, restricted fuel filter or line, or a bad fuel regulator.

At the point where the graph is maxed is just after WOT.

http://i407.photobucket.com/albums/p...ot-in-gear.jpg

ratrace2 01-24-2013 11:08 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ♣ MiniDutch ♠ (Post 8058980)
Hey guys, i'm hoping someone here can answer my question. First off i Have a 95 Chevy S10 4.3L V6 Vin:W CPI.

I've recently changed both knock sensors, TPS, MAP Sensor, Distributor Cap, Distributor Rotor, Spark Plugs, Spark Plug wires. The truck also has a brand new cooling system ( water pump, thermostat, radiator). My car idles perfectly when its parked, the RPM's stay around 800.... Lately when i'm driving the truck from 40 MPH - 60 MPH my RPM's start to drop randomly, and the truck will start to bog out. But as soon as i floor it the problem will go away and slowly start to come back as i cruise around 75 MPH.

My service engine light came on, i plugged the computer on to read the codes and this is what i got
** P0326 - Knock Sensor 1 Circuit Range/Performance (Bank 1) **

I don't understand because both my knock sensors are less than a month old.:(

i don't know where else to turn, I've had 2 mechanics look at the truck and they have no clue what it could be.

I hope someone could shed some light on my situation.
Thanks in advance

Did you ever check/change the O2 sensors????

You only need to change the top ones (closest to the engine) they are B1S1 and S2, they control fuel trim to the ECM.

dake07 02-03-2013 05:10 PM

Re: **Diagnostic Trouble Codes**
 
i have a 2001 chevy blazer 2 wd and i have codes p0300 amd code p0405 and code p0410 anyone help me out how can i fix this the engine is out of a 2003 and its a 4.3 help would be awsome i clearded the codes hoping that they dont return

ratrace2 02-03-2013 07:27 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by dake07 (Post 8075466)
i have a 2001 chevy blazer 2 wd and i have codes p0300 amd code p0405 and code p0410 anyone help me out how can i fix this the engine is out of a 2003 and its a 4.3 help would be awsome i clearded the codes hoping that they dont return

OK, first of all. Buy the book, Chiltons, Mitchell, Alldata. I don't care.

1. check your wiring, spark plug wires. You got'em on wrong.

Check back.

pack of q tips 02-07-2013 09:41 AM

Re: **Diagnostic Trouble Codes**
 
scan tool wont connect, any ideas? plug it into the data port and it powers up but wont connect to vehicle, 2001 blazer no start

4stringsteve 02-10-2013 11:21 AM

Re: **Diagnostic Trouble Codes**
 
Hey guys, love the forum, first post.
'02 4.3 about 140000 miles.
Just recently had fuel pump go out for the 2nd time in about 6 years, this time I decided to do it myself. While removing the front tank strap I noticed it was rubbing up against the main wiring cluster and had actually cut about 4 of the wires all the way through. I did the best I could to fix it, and finished the job. Still have SES light on, even flashes at around 70 mph. Its reading the code 447 I believe, vent solenoid. Does anyone have any troubleshooting suggestions or a link that would help me change the solenoid? I want this light gone for good!
Thanks in advance.

♣ MiniDutch ♠ 02-12-2013 07:20 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8075607)
OK, first of all. Buy the book, Chiltons, Mitchell, Alldata. I don't care.

1. check your wiring, spark plug wires. You got'em on wrong.

Check back.

Sorry for the late response, been extremely busy with work lately. There is nothing wrong with my wiring. I do have the book, I've had it since I first purchased the truck. Long story short, I took the car to a family mechanic. He stated that there's nothing wrong with the engine. He said my transmissions overdrive is kicking in way to early, and is causing the truck to drop RPM's sporadically. He said it might be the Torque Converter.

ratrace2 02-12-2013 07:54 PM

Re: **Diagnostic Trouble Codes**
 
that's an easy fix.......check for the Lock-up rpms on the tranny.......

ratrace2 02-12-2013 07:55 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by pack of q tips (Post 8079343)
scan tool wont connect, any ideas? plug it into the data port and it powers up but wont connect to vehicle, 2001 blazer no start

Try turning the key all the way to "on"---to start.....I have to do that sometimes.

♣ MiniDutch ♠ 02-12-2013 08:06 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8084145)
Try turning the key all the way to "on"---to start.....I have to do that sometimes.

how do I check for the lock up RPM's?

24digger 02-12-2013 08:22 PM

Re: **Diagnostic Trouble Codes**
 
My 95 only has 2 o2 sensors, so thats probably all you have. But I'm sure you figured that out already.

ratrace2 02-12-2013 08:38 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ♣ MiniDutch ♠ (Post 8084160)
how do I check for the lock up RPM's?

Hook up a scanner and go for a drive................

♣ MiniDutch ♠ 02-12-2013 09:10 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8084199)
Hook up a scanner and go for a drive................

Which scanner??

ratrace2 02-12-2013 09:23 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ♣ MiniDutch ♠ (Post 8084239)
Which scanner??

Innova 3160b

pack of q tips 02-13-2013 01:13 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8084145)
Try turning the key all the way to "on"---to start.....I have to do that sometimes.

yea they key is on, thanks im not a moron

ratrace2 02-13-2013 01:06 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by pack of q tips (Post 8084566)
yea they key is on, thanks im not a moron

I didn't say that.

I couldn't get my scanner to work on my friends Volvo until I put the key to "start", not just on.

pack of q tips 02-13-2013 04:36 PM

Re: **Diagnostic Trouble Codes**
 
okay, hard to tell tone on a computer screen. i have a feeling my ignition switch is going, i bought a new one just havent put it in yet. i know when the switch went in my bravada it caused weird electrical problems. but i could still pull codes

♣ MiniDutch ♠ 02-15-2013 06:01 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ratrace2 (Post 8084822)
I didn't say that.

I couldn't get my scanner to work on my friends Volvo until I put the key to "start", not just on.

I'm parting out the truck!!

Here's the link, will be taking more pictures soon.

http://www.s10forum.com/forum/f295/9...8/#post8086625

Scottdash8 03-05-2013 09:40 AM

Re: **Diagnostic Trouble Codes**
 
I apologize if this is not the right way to post this but this is new to me.... I have a 2000 Chevy S-10 and failed inspection due to P0753 code. Which is shift A solenoid. I dropped the pan, replaced both shift solenoids, checked the wires and even tested the old solenoids against the new ones (which tested fine). I cleared the code and it is comes right back on. I took it to transmission shop in town and they hooked up to diagnostic computer and verified that the tranny is shifting exactly as it should right on time. He is baffled. Any suggestions would be appreciated.

MZuchick 09-30-2013 02:08 PM

Re: **Diagnostic Trouble Codes**
 
Tell me are these good or bad reading for my truck which is a 2002 S10 Truck with a 4.3L V-6 motor. Anyone know where I can find the data (baseline) I can use compare the output from my truck with?

I've tried to find the base line reading for a the same truck on the internet to compare my truck readings to, but with no luck.. I'll admit I'm Green as Grass with this computer stuff on these trucks and I'm 60 year old trying to figure this stuff out.. HELP! <Grin<<

FUEL SYS1 Fuel System 1
CL Closed Loop HO S
OL Open Loop HO2S
Using HO2S Using Oxygen Sensor
FUEL SYS2 Fuel System 2 HO2S
COOLANT TEMP Engine Coolant Temperature 187 Deg.
ST FTRM1 Short Term Fuel Trim Fuel System 1 -0.0 to .07
LT FTRM1 Long Term Fuel Trim Fuel System 1 21.8
ST FTRM2 Short Term Fuel Trim Fuel System 2 0
LT FTRM2 Long Term Fuel Trim Fuel System 2 18.7
Engine (RPM) Engine Speed in Revolutions Per Minute 627 mph
VEH SPEED (MPH) Vehicle Speed in Miles Per Hour 0
IGN ADV (DEG) Ignition Advance in Degrees 17 Deg.
IAT (°F) Intake Air Temperature in Degrees Farenheit 124 Deg.
MAF (lb/min) Mass Airflow in Pounds Per Minute .66 lb/min.
ABSLT TPS (%) Absolute Throttle Position in Percent 0
O2S11 (Volts/.125) (%) O2 Sensor 1 Bank 1 Volt & % 0
O2S12 (Volts/.840) (%) O2 Sensor 1 Bank 2 Volt & % 0.7
O2S21 (Volts/.125) (%) O2 Sensor 2 Bank 1 Volt & % N/A
O2S22 (Volts/.840) (%) O2 Sensor 2 Bank 2 Volt & % 1.7

Imatexanfan 10-01-2013 06:05 PM

Re: **Diagnostic Trouble Codes**
 
My 2001 S10 is throwing code P0463 - Fuel Level Sensor Circuit High Voltage...now is it easier for me just to replace the whole fuel pump or try to find this sensor?!

burned 10-01-2013 11:19 PM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by Imatexanfan (Post 8372178)
My 2001 S10 is throwing code P0463 - Fuel Level Sensor Circuit High Voltage...now is it easier for me just to replace the whole fuel pump or try to find this sensor?!

You can service just the fuel level sensor. Its available from any G.M. dealer or Ebay.

autoexpert 10-28-2013 08:10 AM

Re: **Diagnostic Trouble Codes**
 
Quote:

Originally Posted by ♣ MiniDutch ♠ (Post 8058980)
Hey guys, i'm hoping someone here can answer my question. First off i Have a 95 Chevy S10 4.3L V6 Vin:W CPI.

I've recently changed both knock sensors, TPS, MAP Sensor, Distributor Cap, Distributor Rotor, Spark Plugs, Spark Plug wires. The truck also has a brand new cooling system ( water pump, thermostat, radiator). My car idles perfectly when its parked, the RPM's stay around 800.... Lately when i'm driving the truck from 40 MPH - 60 MPH my RPM's start to drop randomly, and the truck will start to bog out. But as soon as i floor it the problem will go away and slowly start to come back as i cruise around 75 MPH.

My service engine light came on, i plugged the computer on to read the codes and this is what i got
** P0326 - Knock Sensor 1 Circuit Range/Performance (Bank 1) **

I don't understand because both my knock sensors are less than a month old.:(

i don't know where else to turn, I've had 2 mechanics look at the truck and they have no clue what it could be.

I hope someone could shed some light on my situation.
Thanks in advance

I found this Website helpful..
You can find engine trouble codes details and lot more..

290ks10 11-26-2013 04:43 PM

Re: **Diagnostic Trouble Codes**
 
I have a 96 4.3L with a manual transmission. It keeps throwing the P0303 code for a misfire on cylinder 3. The truck runs strong and you can't feel the misfire at all no matter what speed it happens at. I have changed all plugs, wires, cap and rotor with AC Delco parts and the code still pops. The code may come up after 7 miles or 50 miles. Any suggestions on why it is always just a misfire on cylinder 3?? Any help or ideas are greatly appreciated!

sgumpper 12-16-2013 10:04 PM

Re: **Diagnostic Trouble Codes**
 
Hello I have a 98 GMC Jimmy ( 4.3 W Engine ) that keeps giving me a P135 code. I know the code refers to HO2S Heater Circuit Bank 1 Sensor 1. I have replaced the O2 and even swapped it out with a different one on the truck. But it keeps popping up. Someone told me to replace the temp senor on the engine block that goes to the PCM but I would thing if that was bad it would also be a P0155 Code. This has been going on for 1 year. More so in the winter time. Please help Im ready to shoot it

AWD V8 12-16-2013 10:19 PM

Re: **Diagnostic Trouble Codes**
 
Check the ground circuit for the sensor.

sgumpper 12-18-2013 07:28 PM

Re: **Diagnostic Trouble Codes**
 
i check the groung circuriy and i have agood groung going to the O2. i also replaced the pcm with no luck. what else can i check. is there any way to rerun the wires going to the O2

AWD V8 12-18-2013 08:13 PM

Re: **Diagnostic Trouble Codes**
 
Is your exhaust stock?

Is the O2 sensor in the factory location/position?

What brand of sensor are you using?

Do you have corrosion in the sensor harness connector?

sgumpper 12-22-2013 12:27 AM

Re: **Diagnostic Trouble Codes**
 
stock exhaust, O2 sensor in the factory location, AC delco brand. and i check no corrosion. might have found my issue. it looks loke the ecm wreing harness has a damaged purple wire and thats the wire that goes to the O2. can i repair that and if so what would be the best way?

RRhounddog 05-06-2014 11:49 PM

Re: **Diagnostic Trouble Codes**
 
I have a 99 s10 2.2l. I've been fighting this thing for a year now trying to get it to pass echeck
So far I've replaced:
Upstream and downstream o2 sensors
Gas cap
Fuel pump pressure sensor
Egr solonoid

Every time I fix one thing and retest another "new" code comes up. The latest are p0140 and b0237.

Truck runs and looks great 150k but I'm banging my head against the wall.


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