| | O2 sensor help!!!!
Ok so I've had a problem for a while now I have to bank 1 sensor 1 o2 sensor keep throwing a code I'll post it tomorrow but I replace the sensor and for a while it goes away then comes back like clock work maybe 50 mi I was thinking it was the quality of the brand so I tried many different ones I have acdelco in there right now same code.. Question could back pressure be a cause of the issue I think the code is saying low activity... My reason of thing back pressure is that I have true duels and the left side (bank 1) has lots more back pressure than the right side you can feel the difference in exhaust on either side ... Possible? And I know if I have a head gasket leaking on that side it could be killing that sensor too, but just what I've heard...? Any thoughts?