Quote Originally Posted by evilstuie View Post
Oh ok.
I've got a similar issue with mine I think. Left bank O2 sensor goes up and down as it should, the right bank only moves from 0.445 to 0.455, but both fuel trims are working. Let me know if you find a solution to yours. :)
Interesting. My issue is with the right bank. We swapped the O2 sensors for other known working units and also the wiring from right to left to bank to confirm it was the wiring. We tested the right bank wiring for the usual Gnd, 12v+, signal to the ECM. All were checking our good (???) However, like you, only moving from 0.445 to 0.455 ish.... I wonder if there is something with the ECM..

I will definitely post my findings... Thanks evilstuie :)