E93 M3 Engine Malfunction Warning

billcruise · 10-18-2016, 07:38 AM

I'm getting a "Engine malfunction. Engine operating at reduced output. Possible to continue. Drive with caution. Have the system checked by the nearest BMW center" message on the idrive display. I bought an Carly reader and after clearing the pre-existing codes, I get the following:

1. Engine / Motor

index - 0027E4
check at lower top - 002B57

18. Motor Control

ECU55 - sorry, unknown DTC fault - 00DE50
Central Control -sorry, unknown DRC fault - 00A2CD

I was hoping for more clarity from Carly but I can't seem to find anything conclusive on these codes. When this started happening, there is a sound near the drivers side footwell area I think on the outside... sounds like an electric motor that is running (normal sounding hum like a fuel pump) that just doesn't stop.

Any ideas on these faults and solution?

Josparky · 10-18-2016, 09:08 AM

I got the same "check at lower top - 002B57" along with misfires on all cylinders error message and car went to limp mode after I installed test pipes... restarted the engine and I haven't had the errors come up again... I think my issue was a slight leak in the exhaust system... I tried to find what this "check at lower top - 002B57" relates to and I think this particular message comes up when ever there is an issue with anything else that's critical...

R3dliner · 10-18-2016, 09:53 AM

If you have carly send the log in and they will give you a explanation on the codes.

Rat3d ///M · 10-18-2016, 04:02 PM

Quote:

Originally Posted by Josparky

I got the same "check at lower top - 002B57" along with misfires on all cylinders error message and car went to limp mode after I installed test pipes... restarted the engine and I haven't had the errors come up again... I think my issue was a slight leak in the exhaust system... I tried to find what this "check at lower top - 002B57" relates to and I think this particular message comes up when ever there is an issue with anything else that's critical...

2B57 means your car went into limp mode. It's useless in diagnosing anything. Yours is related to exhaust leak on both banks. I'd put money on it. OPS situation I'm not sure.

billcruise · 10-27-2016, 08:37 PM

Turns out the problem was a sensor on the brake booster's vacuum motor. I had noticed a new wirring noise on start up that came from around the driver's footwell area. Once the sensor was changed, everything cleared up again.

10-18-2016, 07:38 AM	#1
billcruise New Member 24 Rep 23 Posts Drives: 2011 E93 M3 Join Date: Oct 2015 Location: Cincinnati iTrader: (0)	E93 M3 Engine Malfunction Warning I'm getting a "Engine malfunction. Engine operating at reduced output. Possible to continue. Drive with caution. Have the system checked by the nearest BMW center" message on the idrive display. I bought an Carly reader and after clearing the pre-existing codes, I get the following: 1. Engine / Motor index - 0027E4 check at lower top - 002B57 18. Motor Control ECU55 - sorry, unknown DTC fault - 00DE50 Central Control -sorry, unknown DRC fault - 00A2CD I was hoping for more clarity from Carly but I can't seem to find anything conclusive on these codes. When this started happening, there is a sound near the drivers side footwell area I think on the outside... sounds like an electric motor that is running (normal sounding hum like a fuel pump) that just doesn't stop. Any ideas on these faults and solution?
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10-18-2016, 09:08 AM	#2
Josparky Second Lieutenant 48 Rep 256 Posts Drives: 2011 E92 M3; 2012 E88 135i Join Date: Aug 2015 Location: Sydney iTrader: (0)	I got the same "check at lower top - 002B57" along with misfires on all cylinders error message and car went to limp mode after I installed test pipes... restarted the engine and I haven't had the errors come up again... I think my issue was a slight leak in the exhaust system... I tried to find what this "check at lower top - 002B57" relates to and I think this particular message comes up when ever there is an issue with anything else that's critical... __________________ [2011 E92 M3 Jerez Black] evolve stage II \| alpine dct & mdm \| resonated test pipes \| rays forged G25 \| vorsteiner gts-v front lip \| metak rear diffuser \| awron gauge
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10-18-2016, 09:53 AM	#3
R3dliner Lieutenant Colonel 1014 Rep 1,933 Posts Drives: 18 M3 6MT Join Date: Mar 2016 Location: NYC iTrader: (5)	If you have carly send the log in and they will give you a explanation on the codes.
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10-27-2016, 08:37 PM	#5
billcruise New Member 24 Rep 23 Posts Drives: 2011 E93 M3 Join Date: Oct 2015 Location: Cincinnati iTrader: (0)	Turns out the problem was a sensor on the brake booster's vacuum motor. I had noticed a new wirring noise on start up that came from around the driver's footwell area. Once the sensor was changed, everything cleared up again.
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