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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! Sudden Loss of Power and CELs (Codes are listed)



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      04-14-2014, 08:59 PM   #1
idyfohu
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HELP! Sudden Loss of Power and CELs (Codes are listed)

I'm in a bit of a panic, so hopefully I can get some guidance.

A little background on my car:

E92, 09 w/ 56k miles, w/ Cobb Stage 2, DPs, DCI, FMIC.

Over the past two weeks, my idle has been a little rough and I've had a few hesitations at startup in the morning. I was assuming my valves were dirty (was planning on having a walnut blast done). Was driving just a few minutes ago, headed home (car was warm) and pulled out onto a main street and suddenly my car shuddered and CEL came on.

The car is sluggish, is mis-firing, and occasionally would have an awful smell in the cabin (no smoke on the outside from what I could see). The idle is extremely rough and from 1,000-2,500RPMs the car is a bit shaky and for whatever reason is a bit smoother above that (didn't go much higher than 3,000).

I just plugged in my Cobb and got the following list of codes:

P0306
P2AAF
P2C7C
P2C3E
P29D2
P2FBF
H29CD
H29D1
H29CE
H29D0
H2AAF
H29CD
H29CE
H29D1
H29D0
H29CC

Yup, there's a lot of them.

The only good thing, I had an oil change schedule for tomorrow morning, so I'm hoping they can look at the car. I'll be putting the car back to Stage 0/Stock, anything else I should do since my car is out of warranty?

Last edited by idyfohu; 04-14-2014 at 09:18 PM.
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      04-14-2014, 09:03 PM   #2
JDrago1926
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Holy shit that is a lot of codes.. Sounds like HPFP or injectors or even both.
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      04-14-2014, 10:52 PM   #3
Ingeniator
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I would clear all codes and check plugs. Your getting misfires and O2 codes and HP fuel shutoff. Clear them see what comes back and use the misfire troubleshooting sticky.
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07 335XI (A008006) 6AT ~94K miles JB4 G5 ISO VSRF DP's
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