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      12-20-2025, 12:03 AM   #4
supergoji
Performance nutcase
United_States
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Drives: 08 E92 M3
Join Date: Jul 2009
Location: NY

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Quote:
Originally Posted by spammysammich View Post
Are you absolutely sure there are no exhaust leaks at the header/xpipe junction? Leaks will absolutely kill the front O2 sensors eventually.
No leaks. I could imagine there would be other codes. But this is for the Heater circuit



I will check the SAP system. The Bosch sensors im buying are from fcp euro.
Appreciate 0