My 19 month old accidentally hit enter before I could finish my post.
After replacing the sensor I drove with the check engine light on for all quite a while. It was at this point I noticed one occasion that the cat overheated on a long drive. It didn’t happen again for many months after. Then this weekend on a camping trip it was overheating almost the entire drive. This leads me to believe that bank to censor one is causing a bad fuel mixture and dumping excess fuel into the exhaust which is combusting in the cat.
I learned only then from a friend that I forgot to reset the ECU when I replaced the sensor many months ago. I did a reset, but the problem still occurs and the check engine light came back on. What’s really interesting though is that the new code is P0135 which is bank one sensor one, the driver side, not the passenger side.
Does anyone know if a bad bank one sensor can affect the fuel mixture going to the bank two side of the engine? I’m hoping it is a simple as replacing bank 1 sensor 1.