Hey guys, I keep getting a code for an o2 sensor on my Turbo m3 (sensor 2 bank 1). I am only running the primary o2 in the downpipe. How can I eliminate this code? Thanks!
Already took it to my tuner twice.. he said he fixed it but still a check engine light!
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I think your tuner knows what he is doing. no personal experiences with them. but they have done more tunes that the only one I did.
I don't know what can cause this other than that the post cat O2 sensor is not written out of the code properly.
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