mdonaldson

Depends on the problem- what code(s) are you seeing? If it's something related to the catalytic converter, the rear sensor would more than likely be the one to change out.

Same issue as the OP, P0420 code comes in intermittently. More frequent when the weather is cold.

Just wanted to update and say that it is indeed a O2 sensor. After reading about the ‘Bank 1,’ code, I ruled it out and it did solve the problem. You guys are awesome! My bank account and myself are very grateful

 

 

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Resurrecting a really old thread. I have a similar issue. Looking for confirm if replacing the front vs. the rear O2 sensor is the way to go?