SES code P0147

[Verne]

I am getting SES code P0147 with is "O2 Sensor Heater Circuit Malfuntion Bank 1 Sensor 3". I think we got some of the O2 sensors swapped up when we put on my headers and Y-pipe this past weekend but my question which sensor is it? I have one on each header, one before the cat and one after. Oh yeah its a 1997 4.3.

Thanks,

Verne

[Verne]

Just need to know what sensor it is referring to.

Thanks,

Verne

[LS10]

bank 1 sensor 1 is the first sensor on your driver side. bank 2, sensor 1 is the front pass side. bank 1 sensor 2 should be the precat sensor. and bank 1 sensor 3 should be the last sensor. o2 simms or deletion through edit should take care of it. If you don't have cats, it's normal for it to be set off, b/c the sensor is reading improper heating parameters.

[Verne]

Nope keeping the cats just in case I move somewhere that requires emisions. I just got of the phone with the GM tech and he said the same thing. No one local could tell me and my mechanic didn't know how they were labeled either.

Thanks,

Verne

[big pipe]

youll have to get under the truck and look at the wires where they come out of the senser. when i put my edelbrocks on the sensor was so close to the bottom of the floor board that when i drove the thing it pushed the sensor up through the floor of the truck. mostly the one on the drivers side. i had to cut a 2 inch square hole in my floor board and buy a new sensor because it frayed all 4 wires on it and started to short it out. if you got the edelbrocks with the y pipe id bet that you have the same problem that i did. also once you get that takin care of you will have to get your ses light reset.

[Verne]

Yeah had that problem but we took care of it before the install was finished. The O2 on the passenger side was the one that was close. Found out that the one showing the code is the one after the cat which was never touched. Just an ironic coincidence.

Verne

[LS10]

Yey, I was right, lol. Glad I could help, and you got it fixed.

[Verne]

Well the parts house gave me the wrong O2 Sensor so guess what? I just ordered an O2 sim. from summit and the Cat will be coming off now. Plus it was cheaper than the O2 sensor.

Verne

[BlazerLT]

God, why are people ripping off their cat for?

There is no performance difference and you are polluting.

Keep it on and install the damn O2.

[Verne]

Mine will be actually be staying on due to the reason I stated above was just ill yesterday. I had experience taking cats off and you are right in my opion. There is hardly any if at all performance gains.

Verne

[BlazerLT]

Good man, I'm proud of ya.

Seems like everyone thinks taking it out is the miracle performance booster when it does really nothing.

[Verne]

The only reason I thought about it is not performance but $ related. To get everything redone they want $180 to $200 for just a new converter since mine is turned to fit the new Y-pipe and awfully close to the cross member.. But its working now so who cares.

Verne