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code 0146

  1. O2 sensor issues

    S10 / Sonoma
    Can anyone help? I have a 1998 Chevy S10 with the 4.3 Vortec and have been having problems with an O2 sensor. I was getting a code 0147 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3) so I replace the O2 sensor. Now I am getting a code 0146 O2 Sensor Circuit No Activity Detected (Bank 1...