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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 > FAULT CODES - whats the problem?



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      12-30-2008, 08:08 AM   #1
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Unhappy FAULT CODES - whats the problem?

I had this experience twice in a week. My 335i jerked and lost power as I pushed it in low gears. The I drive shows "Engine Fault. Reduced Power".

I sent my car to my usual workshop to read the error codes, and there were 3 as follows:
1) 2ABC Boost pressure sensor, electric
2) 3100 Boost pressure control, deactivation
3) 29DC Cylinder injection cutout

The guys at the workshop attributed the 3rd fault code to a possible faulty high pressure fuel pump, so I had it replaced in a hope to eliminate one factor at a time. However, I still had the same problem after the HPFP is replaced, so I believe there is another problem associated with the 1st and 2nd fault codes. I had a buddy checked if it could be caused by the waste gate actuator but it seems not.

Could the remaining problem be due to a faulty boost pressure sensor? There are 2 in our 335i but the codes do not say which of them is faulty.

Any ideas will be appreciated.
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      12-30-2008, 12:17 PM   #2
luca335i
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no warranty? Boost leak maybe ?
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      12-30-2008, 05:57 PM   #3
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Boost leak? Does anyone else had this problem before?
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      12-30-2008, 06:31 PM   #4
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If you have a tune installed, check to see if wires 6 and 7 in the small loom are reversed.
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      12-30-2008, 08:16 PM   #5
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Quote:
Originally Posted by Mr. 5 View Post
If you have a tune installed, check to see if wires 6 and 7 in the small loom are reversed.
Thanks Mr 5. Will do a check on the wire.

I have JB3 on my car.
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      12-30-2008, 09:22 PM   #6
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hpfp
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      12-31-2008, 05:31 AM   #7
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Quote:
Originally Posted by sd390r View Post
hpfp
HPFP replaced, problem still there
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      02-03-2009, 12:20 PM   #8
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Bump to this thread.

Did the code 3100 Boost Control Deactivation ever get resolved???

I threw this code recently also.
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      02-03-2009, 12:27 PM   #9
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Quote:
Originally Posted by Ilma View Post
Bump to this thread.

Did the code 3100 Boost Control Deactivation ever get resolved???

I threw this code recently also.
That boost deactivation code is caused by the other code(s). It's just means that your ECU triggered a no-boost limp mode. It's the other code(s) that initiated the problem that are the ones you need to get to the bottom of.

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      04-17-2009, 07:58 PM   #10
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Bump to this thread

Found those 3 bad boys:
1) 2ABC Boost pressure sensor, electric.
2) 3100 Boost pressure control, deactivation.
3) 29DC Cylinder injection cutout.

HPFP already raplaced less than 200 miles ago..
Any updates?
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      04-17-2009, 08:05 PM   #11
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Quote:
Originally Posted by D@m!n!C@no View Post
Bump to this thread

Found those 3 bad boys:
1) 2ABC Boost pressure sensor, electric.
2) 3100 Boost pressure control, deactivation.
3) 29DC Cylinder injection cutout.

HPFP already raplaced less than 200 miles ago..
Any updates?
Do you have a JB3 Extension cable? This came up yesterday:
"
Quote:
Originally Posted by Mike@N54Tuning.com View Post
If the code is 2ABC, it's the extension cable. BMS stopped suggesting the proliant cable as it causes problems in some cars. They're working on finding a more reliable cable.

We didn't actually sell them to anyone, just posted a link and informed people they could test it. But the proliant extension cable is generally fail. Causes random 2ABC codes.

Mike
From thread: http://www.e90post.com/forums/showth...highlight=2abc
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      04-17-2009, 08:12 PM   #12
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Yeah I read that, but I don't have the extension cable...
What else it could be?
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      05-27-2009, 07:47 PM   #13
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Did you ever resolved this problem, Im having the same problem with the fist two codes...I dont have a tune....
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      05-28-2009, 10:45 AM   #14
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i have the same issues with my JB3 1.3. consistently throwing these codes every day (maps 2 & 5) + others. im running on MAP 0 now to see if i get LIMP again.. this is annoying!! i had no issues with 1.1

im still working on it but if may open my my own thread about some issues
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      07-30-2009, 06:13 PM   #15
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I had 3100 the other day, took her in for other service, on the printout they said it was nothing after checking and just reset the code....
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