P0137

[amw]

Just wondering what PID I can use to check the status of the rear driver's side O2 sensor? What type of reading am I looking for, to determine if it's working properly or not? I have the rears turned off in the tune, but from what I understand, they still need to be able to send a signal to the ECU.

Thanks.

[mikel]

You can check the O2 voltage, it should sweep constantly.

My guess is a failed sensor or burnt/damaged harness.