Error Codes And Almost Limp Mode

sparky_phantom · 10-15-2015, 07:29 PM

When I was coming from from work today, my car hesitated then gave me a warning on dash stating engine was over heating to drive moderately (Yellow Light). So I was then trying to get over to a safe place to stop. Before I could get there got another message stating that engine was over heating and to stop the car immediately (Red Light). I got pulled over and then pulled error codes from my Cobb AP V3. I got the following codes:

ECU
-P3792
-P377A
-P2CF4

I have tried to Google these and I can't find these anywhere. I did find a list of error codes in a .pdf for my N55, however these were not in there. If anyone is able to help, I would be grateful.

I have a 2011 135i DCT N55.

what have i got into · 10-15-2015, 09:11 PM

Look at the second column of that N55 error codes sheet and you will see the 0X3792 code versus looking at the 6th column with the P references.
The 3792 is the coolant pump. Hope that helps.

sparky_phantom · 10-16-2015, 12:49 AM

Quote:

Originally Posted by what have i got into

Look at the second column of that N55 error codes sheet and you will see the 0X3792 code versus looking at the 6th column with the P references.
The 3792 is the coolant pump. Hope that helps.

Thank you for clarifying that. So maybe water pump has gone out?

what have i got into · 10-16-2015, 06:06 AM

Just from what I have seen on these forums, I wouldn't automatically assume it's the pump. It may be a broken thermostat, wiring harness loose to the pump, and then maybe it's the pump. I try and go from check the cheaper solutions to more expensive solutions. But that's all I have as I haven't had this issue.

http://www.1addicts.com/forums/showthread.php?t=960648

dbchun · 10-16-2015, 10:07 AM

how many miles on the car? my water pump just failed and had the same exact symptoms (but i didn't get a chance to check codes)

Funch · 10-16-2015, 11:54 AM

My water pump went at 44k, same issues. This car is prone to having water pump issues between 30-60k. A forum search will pull up a number of threads outlining the issue. If it IS the water pump you are looking at between 700-1000 dollars to fix if you are outside warranty as the pump is a $500 part and you may need a new thermostat as well... Best of luck.

sparky_phantom · 10-16-2015, 07:57 PM

My car currently has 55k miles on it. I have an extended warranty I bought so that should fix that if that is the issue.

10-15-2015, 07:29 PM	#1
sparky_phantom Private First Class 25 Rep 121 Posts Drives: 2011 BMW 335i Join Date: Oct 2014 Location: United States iTrader: (0) Garage List 2011 BMW 135i [0.00]	Error Codes And Almost Limp Mode When I was coming from from work today, my car hesitated then gave me a warning on dash stating engine was over heating to drive moderately (Yellow Light). So I was then trying to get over to a safe place to stop. Before I could get there got another message stating that engine was over heating and to stop the car immediately (Red Light). I got pulled over and then pulled error codes from my Cobb AP V3. I got the following codes: ECU -P3792 -P377A -P2CF4 I have tried to Google these and I can't find these anywhere. I did find a list of error codes in a .pdf for my N55, however these were not in there. If anyone is able to help, I would be grateful. I have a 2011 135i DCT N55.
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10-15-2015, 09:11 PM	#2
what have i got into Private 14 Rep 54 Posts Drives: 2012 135i, 2013 X5d Join Date: Mar 2015 Location: Portland OR iTrader: (1)	Look at the second column of that N55 error codes sheet and you will see the 0X3792 code versus looking at the 6th column with the P references. The 3792 is the coolant pump. Hope that helps.
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10-16-2015, 06:06 AM	#4
what have i got into Private 14 Rep 54 Posts Drives: 2012 135i, 2013 X5d Join Date: Mar 2015 Location: Portland OR iTrader: (1)	Just from what I have seen on these forums, I wouldn't automatically assume it's the pump. It may be a broken thermostat, wiring harness loose to the pump, and then maybe it's the pump. I try and go from check the cheaper solutions to more expensive solutions. But that's all I have as I haven't had this issue. http://www.1addicts.com/forums/showthread.php?t=960648 Last edited by what have i got into; 10-16-2015 at 07:17 AM..
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10-16-2015, 10:07 AM	#5
dbchun First Lieutenant 63 Rep 351 Posts Drives: 2009 135i Join Date: Sep 2008 Location: CA / AZ iTrader: (0)	how many miles on the car? my water pump just failed and had the same exact symptoms (but i didn't get a chance to check codes) __________________ N54 powered MHD tuned
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10-16-2015, 11:54 AM	#6
Funch Private First Class 11 Rep 130 Posts Drives: 2007 z4m coupe Join Date: Jun 2014 Location: Rodeo, CA iTrader: (2)	My water pump went at 44k, same issues. This car is prone to having water pump issues between 30-60k. A forum search will pull up a number of threads outlining the issue. If it IS the water pump you are looking at between 700-1000 dollars to fix if you are outside warranty as the pump is a $500 part and you may need a new thermostat as well... Best of luck.
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10-16-2015, 07:57 PM	#7
sparky_phantom Private First Class 25 Rep 121 Posts Drives: 2011 BMW 335i Join Date: Oct 2014 Location: United States iTrader: (0) Garage List 2011 BMW 135i [0.00]	My car currently has 55k miles on it. I have an extended warranty I bought so that should fix that if that is the issue.
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