Still trying to figure this one out... Havnen't gotten any replies yet. I recently had the check engine light go on, got code 4-3-6, which is Rear heated oxygen sensor compensation. OK, now what is that? I know what a rear O2 sensor is but what is compensation and how do I fix it? Can't find anythin...

I recently had the check engine light go on, got code 4-3-6, which is Rear heated oxygen sensor compensation. OK, now what is that? I know what a rear O2 sensor is but what is compensation and how do I fix it? Can't find anything anywhere.

You're the best.

Hey there, just wondering if there is a typical problem with the seatback on my 96 850 sedan where the motor is working but the seat isn't moving. Is there a worn wormgear or something? Figured I'd ask before tearing in there and poking around...