Random rough idle issue : Code 275E & 27BB

f82_spooly · 10-27-2025, 12:43 AM

Hello all I'm having a random rough idle on my 2013 E92 M3 6MT. I scanned and got these codes. I replaced BOTH pre at O2 sensors and the fuel position sensor behind the intake but STILL running into the same issue. What do you guys think?

275E : PRESENT : DIGITAL MOTOR ELECTRONICS (DME): OXYGEN SENSOR LIMIT POSITION ERROR (BANK 2)

27BB : ABSENT : DIGITAL MOTOR ELECTRONICS (DME) : FUEL SYSTEM, LAMBDA/CHARGE PLAUSABILITY(BANK 2)

For reference I have a alibaba titanium exhaust, Eventuri inlet carbon intake and a AlpineMSS tune. I installed fresh injectors and spark plugs about 15k miles ago.

Any help is appreciated!

f82_spooly · 04-29-2026, 06:29 PM

Anyone cars basically parked haven't driven it in months.

spammysammich · 04-30-2026, 04:55 PM

What have you done to troubleshoot? Did you check battery voltage, grounds and exhaust gaskets?

10-27-2025, 12:43 AM	#1
f82_spooly First Lieutenant 121 Rep 365 Posts Drives: F82 M4, E92 M3, E46 M3 Join Date: Dec 2016 Location: Connecticut iTrader: (0)	Random rough idle issue : Code 275E & 27BB Hello all I'm having a random rough idle on my 2013 E92 M3 6MT. I scanned and got these codes. I replaced BOTH pre at O2 sensors and the fuel position sensor behind the intake but STILL running into the same issue. What do you guys think? 275E : PRESENT : DIGITAL MOTOR ELECTRONICS (DME): OXYGEN SENSOR LIMIT POSITION ERROR (BANK 2) 27BB : ABSENT : DIGITAL MOTOR ELECTRONICS (DME) : FUEL SYSTEM, LAMBDA/CHARGE PLAUSABILITY(BANK 2) For reference I have a alibaba titanium exhaust, Eventuri inlet carbon intake and a AlpineMSS tune. I installed fresh injectors and spark plugs about 15k miles ago. Any help is appreciated!
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04-29-2026, 06:29 PM	#2
f82_spooly First Lieutenant 121 Rep 365 Posts Drives: F82 M4, E92 M3, E46 M3 Join Date: Dec 2016 Location: Connecticut iTrader: (0)	Anyone cars basically parked haven't driven it in months.
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04-30-2026, 04:55 PM	#3
spammysammich Lieutenant Colonel 3073 Rep 1,799 Posts Drives: 2009 E92 M3 Dakar Yellow II Join Date: Oct 2021 Location: Edmonds, WA iTrader: (0) Garage List 2009 BMW M3 [10.00]	What have you done to troubleshoot? Did you check battery voltage, grounds and exhaust gaskets?
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