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      05-24-2014, 01:14 AM   #1
Jklad
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P2b2c-Throttle Valve??

Hi all, I received the following code, by itself, while driving home tonight:

2B2C - high-pressure fuel system, cold start

Does anyone know what this means, if it needs to be fixed, and what the fix is? I'm guessing its hpfp (I just replaced the hpf sensor last week). Would dealer replace simply with this code?

Symptoms - On the drive home, the car was basically not accelerating much at all; e.g. push the gas, i'd hear the turbos spool up, but the car would not charge forward - felt like no or very little power, but did not trigger a check engine light. I pulled this code when I got home.

Edited the definition - I originally grabbed an outdated definition

Last edited by Jklad; 05-24-2014 at 01:37 AM. Reason: Incorrect Code Definition, fixed
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      05-24-2014, 10:09 AM   #2
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Bump -any ideas?
Dealer said they would not replace hpfp unless I get the following hpfp specific codes, which I don't have:
29dc, 29f1, 29f2, and one more
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      05-25-2014, 04:46 PM   #3
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Bump- anyone?? P2b2c???
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      07-01-2014, 11:18 PM   #4
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I have a 2011 335is and I have the same symptoms as you.
Also, when I started my car today it stalled (DCT, so not user error).

I'm going to call the dealer tomorrow and figure out what to do.

P2B2C is my only showing code.

Forgot to mention, my COBB is uninstalled. This is on a completely stock ECU and engine.
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      07-02-2014, 08:57 AM   #5
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I did some searching and found 1 instance where the hpfp was replaced. I also located a n54 diagnosis flow chart, and a puma case, which both showed a path of:
Test low pressure sensor-->if ok, test low pressure pump --> if ok, replace hpfp.

I've recently replaced low and high sensors. My tech tested low pressure pump, tested ok, so their giving me new hpfp under extended warranty.

First dealer I went to with the code tried saying they can only warranty hpfp if certain specific codes pop up, and this wasn't one of them. That's prob bs, as the other dealer is replacing it.

This is on '07 with 100k miles, pump replaced at 45k.
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      07-03-2014, 08:17 PM   #6
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They replaced my HPFP. Thought those issues were gone from 2010 and up models ... guess not completely?
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      07-04-2014, 10:37 AM   #7
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Quote:
Originally Posted by SGe92is
They replaced my HPFP. Thought those issues were gone from 2010 and up models ... guess not completely?
Great, I guess hp pumps will just wear out after a while regardless of the new design.

did you notice any difference in responsiveness or in how the car feels? Mine was replaced also, picking it up on Saturday.
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      07-04-2014, 02:15 PM   #8
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Did the hpfp fix the issue for you guys? My car is throwing the 2b2c code and it runs like crap on cold starts and goes into limp mode whenever I go WOT. Dealer is saying my hpfp is ok and they will not replace it. I've already replaced everything else and am getting really pissed off...
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      07-05-2014, 05:47 PM   #9
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Just got the car back today, need to give it about 2-3 weeks worth of cold starts before I know for sure if it's gone.
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      07-06-2014, 12:49 PM   #10
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Quote:
Originally Posted by Jklad View Post
Great, I guess hp pumps will just wear out after a while regardless of the new design.

did you notice any difference in responsiveness or in how the car feels? Mine was replaced also, picking it up on Saturday.
Big difference, before, it would hesitate a lot when trying to accelerate.
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      07-06-2014, 12:49 PM   #11
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Quote:
Originally Posted by Spoolin Montego View Post
Did the hpfp fix the issue for you guys? My car is throwing the 2b2c code and it runs like crap on cold starts and goes into limp mode whenever I go WOT. Dealer is saying my hpfp is ok and they will not replace it. I've already replaced everything else and am getting really pissed off...
Try a different dealership?
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