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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > BMW e92 335i ( n55 ) 2C01 & 2BDE codes



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      Today, 04:17 AM   #1
Felix335
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BMW e92 335i ( n55 ) 2C01 & 2BDE codes

Hello everyone!

Recently I started to experience some problems with my 335 that it started to get longer cold starts, go rough on idle and smell a lot of gas from the exhaust.
Once the 2C01 code occurs the car comes in to limp mode, however it works fine once I cleared the code. The code only comes when I start the car and stand on idle, never when I am driving. It happened one or two times that the car also died once I started it and put it in reverse, but when it did it was just to start up the car again and everything works fine.

Is this typical symptoms of a failing HPFP? I get no other codes regarding injectors etc.

Car is running MHD stage 2 + fbo.
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      Today, 11:28 AM   #2
lowrydr310
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It might be a faulty high pressure fuel sensor and not necessarily the pump.

You have MHD, have you done any logging?

I had some twitchy low speed throttle response, and low pressure fuel codes. I replaced the pump/regulator and it didn't fix the problem. Only after I got MHD and did some data logging did I see that the low pressure was dipping intermittently into single digits or down to zero. A new pressure sensor fixed the problem.


Your long starts point to HP fuel pump, but I didn't think a weak/failing fuel pump would affect the fuel smell, that seems more like injector problems.
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