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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 > Code 2b2c...loss of power!



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      07-11-2015, 12:47 PM   #1
WRichieX
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Code 2b2c...loss of power!

Hey guys so yesterday morning on a cold start, my car starts to idle rough then smooths out. While driving away, I noticed I had no power. Turbo's weren't spooling at all. I pulled the code, 2b2c. A google search showed that it's a throttle body mis initialisation or something. However, I had no warning lights or anything. When the car shut off and restarted, everything was fine and working normal.

Anyone encounter this before? What needs to be done?

I recently did all my coils and plugs, added JB4, and upgraded chargepipe in the last 2 weeks ish.

75k miles
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      07-11-2015, 01:22 PM   #2
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Did you buy the jb4 new or used? Isn't there a throttle body setting on there that you can reset or something
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      07-11-2015, 04:13 PM   #3
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Did you buy the jb4 new or used? Isn't there a throttle body setting on there that you can reset or something
I bought it new. Is there a throttle setting? didnt see one on n54tech
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      07-14-2015, 02:48 PM   #4
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Bump. Anyone have this issue? This happens every morning on cold start. Have to restart the car and back to normal. Pretty annoying. Not sure if I need to replace the throttle or something else. Any help would be appreciated.
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      07-14-2015, 05:14 PM   #5
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Bump. Anyone have this issue? This happens every morning on cold start. Have to restart the car and back to normal. Pretty annoying. Not sure if I need to replace the throttle or something else. Any help would be appreciated.
Have you tried doing a full system reset via JB4? Maybe that will help
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      07-15-2015, 07:57 AM   #6
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If I remember correctly, my issue was that sometimes on a cold start (maybe 2 times a week), the car would idle like complete crap and almost want to die, Rpm needle would bounce allover. After about 5 seconds, the idle would level off. After almost a year of this happening, the car finally threw a code for fuel pump, and replacing my hpfpump completely fixed the problem. My injectors, coils, and plugs were already newer at the time, and I had replaced both low and high pressure sensors. It was driving me nuts.
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