Quote:
Originally Posted by livinlrg05
Yeah, Bmw ended up replacing the battery and it fixed the code.
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Hello people. My 2013 AH3 had the same problem. Mileage @ 58k, check engine popped and brought to a BMW non-dealer shop and diagnose with bad auxiliary battery and O2 sensor upper stream. It cost me around $300 including labor just to replace battery and didnt had to replace O2 sensor because of this post. So far check engine not popping. I guess battery fixed MIL codes. Good luck all and will update post if anything occurs.
