O2 Sensor Non-Fouler trick?

bronson1111 · Post by **bronson1111** » 03 May 2011, 08:01

I have a 2002 Volvo S80 T6 and my CEL is on. The codes are PO422 and PO420; main catalyst efficiency below threshold and another catalytic problem. I passed emissions three months ago so I am not required to get my CAT fixed. I don't have the money right now. I heard there was a way to get rid of the CEL by installing non-foulers to the O2 sensor. Does this work? If so, which O2 sensor do I install it on? I hope this is an option!

Thank you,
Bronson

Post by **jimmy57** » 03 May 2011, 08:24

no, that is a fix for a particular model and year range (not any S80 or any P2 model for that matter) where oil travels through the wiring and kills oxygen sensors repeatedly.
If you have no funds for repairs and the car runs fine then ignore light and don't waste any money on band-aids. OR put a band-aid over the light.

db130 · Post by **db130** » 03 May 2011, 08:47

you want to install the antifouler on the rear o2 sensor

there are dozens of install threads on google if you search for "antifouler trick"