Thread: P00BC Code
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      02-21-2017, 02:16 PM   #9
momos750
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Drives: 2015 M5, 2011 750Li
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Quote:
Originally Posted by naiza3k View Post
Quote:
Originally Posted by momos750 View Post
Codes:

P00BE - Air Mass 2, Plausibility: Air Mass Too Low

P0242 - Charge Air pressure Sensor, Electric: Short Circuit To Positive

P00BC - Hot Film Air Mass Meter, Operating Range: Air Mass Too Low

P0171 - Mixture Control, Cross Bank: Fuel-Air Mixture Too Lean

P0238 - Boost Pressure Sensor, Electrical: Short Circuit To B+
Understood but these has to be all related to the exhaust, I never had these issues before. Will a JB4 fix this?
I'm at a lost here... really getting tired of the engine codes and car feeling sluggish compared to the OEM exhaust before.
It probably has something to do with the increase in airflow through the engine. I would reset all of the fault codes and let the engine adapt to the new flow. Hopefully it will go away on its own.

Double check the vacuum lines in the rear exhaust for leaks.
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