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      10-26-2019, 02:24 AM   #1
Private First Class

Drives: e46 m3
Join Date: May 2016
Location: St. Louis

iTrader: (0)

Long story. O2 'went bad' but it really was the ground wire. We replaced the o2 in lambda bank 1 and redid the pin wire.

All codes went away and car ran flawlessly. Now after driving it I'm getting an o2 heater malfunction fault code. I cant log any AFRs or STFT which is very important since I'm running a PS2 & Port injection.

What else can I do? Dealer even looked at it and have no idea.