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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Jb4 codes, are these normal codes or bad ones?



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      12-19-2012, 10:53 PM   #1
e87fan89
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Jb4 codes, are these normal codes or bad ones?

Hey guys my jb threw 3 codes. If anyone has any insight please let me know

2C90
2774
3106

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      12-20-2012, 09:42 AM   #2
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All normal, just "Enable Auto Code Clear", command 1-3.

All false positive.

2C90: Blow-off valve, mechanics: Jammed closed
2774: Mass air flow sensor, plausibility: Air mass compared with model too high
3106: Catalytic converter: Efficiency below limit (Catless code)
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