cnorwood19

The codes are "p0135 - o2 sensor heater circuit bank 1 sensor 1" and "p0141 o2 sensor bank 1 sensor 2 heater malfunction"

The o2 before the cat was unplugged from the gray clip, and plugged back in.

Is this really both sensors out? or auxillary heater? I dont know

ajtcl

Both sensors out. Check for good ohms and make sure the sensor oriphus is clean befor you reinstall it. You may not need to replace them... also, make sure to reset the ecu befor you test it again.

ajtcl

Oh wilp99 has a Helms manual... I think he can tell you the proper resistance expected from the 02 sensors.

cnorwood19

both sensors out from installing headers? Both out in the same 3 day period?

What would cause it to do that?

sigh, thats gonna hurt the wallet.

ajtcl

Make sure the ecu is cleared befor you try it again. You might not have to replace them. It may have been the fault of the unplugged harness at the CAT.

cnorwood19

will it give me these errors if the ECU was fried by putting the wires in the wrong slots?

ghost_masterCL

first of all do not spend any money yet. do you have a 3.0?

I installed my headers and had this exact problem happen to me shortly after. It turned out that the O2 sensor wire was touching the rear headers/downpipe and had shorted out. The circuit that it's connected to is also connected to the post-cat sensor so it showed them both out.

Check the rear headers/downpipe and see if the wire for the O2 sensor is touching at all. If not check the wire for he O2 sensor. I know I also had a problem with the wire touching teh axle. Just make sure the wiring is ok, and the fuse for those cirtcuits is replaced before you go spending $400 like I had to.

cnorwood19

I checked the fuses and they were not burnt out.

Im thinking the guy I had do it plugged the o2 sensor into the harness wrong, and therefore I all of a sudden got those codes. I am a 2.3. Both 02s go to the same circuit bank, as the readout implies. He may have shorted out that circuit.

I can hold him to his work. In theory, it shouldnt be coming out of my pocket. Ill talk to the shop.

ajtcl

You would definately get those codes with an improperly connected harness. The ecu would have received the wrong linage signals and therefore saw the O2 sensor as in a failed state.