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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > help with these codes



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      07-06-2013, 01:14 AM   #1
007_e350
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help with these codes

30FF Boost under target -- possible boost leak
2F84 No Description Found
2F81 No Description Found
2F9E Thermic oil level sensor
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      07-06-2013, 01:21 AM   #2
135Pats
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You could have a boost leak from any number of places. On the cold side check the TB, manifold, charge piping, diverter valves, etc. If you can eliminate those parts go to the intercooler couplers and work back towards the turbos. Vac lines can also cause underboost issues.
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      07-06-2013, 08:46 PM   #3
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Holy Guacamoly I have several issue..
Used this great DIY http://www.n54tech.com/forums/showthread.php?t=13114


1- Its not holding pressure at all... diverter valves are OPEN as in WIDE OPEN.. Swoooooooshhhhhhhing out air
2- the charge pipe had a missing bolt it was pretty loose
3- thats how far I could get as yet

what do I do with diverter pipes ? Is it possible to tighten the spring.. If I order new ones I dont know if the male's leakin or female......
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