Rough idle and error codes

Tellmee · 12-08-2022, 03:16 PM

I have rough bouncing rev when engine is cold. Car did get fuel breather valve pretty recently so I’m guessing it’s the ICV but not sure why I’m getting the 1st and the 5th code. I’ve read the 1st one is related to alternator but I am not sure about the 5th one. Has anyone experienced similar set of error codes?

TrackSpecM3 · 12-08-2022, 05:03 PM

That 27B1 code should be an oxygen sensor as that will monitor the output of the secondary air system in that bank

Tellmee · 12-09-2022, 08:07 AM

Quote:

Originally Posted by TrackSpecM3

That 27B1 code should be an oxygen sensor as that will monitor the output of the secondary air system in that bank

Thanks that's what my buddy told me so I ordered the primary o2 sensors.

Hopefully its not the secondaries.

12-08-2022, 03:16 PM	#1
Tellmee Captain 135 Rep 683 Posts Drives: 2011 E90 M3 ZCP AW/FR Join Date: May 2016 Location: Cresskill, NJ iTrader: (0)	Rough idle and error codes I have rough bouncing rev when engine is cold. Car did get fuel breather valve pretty recently so I’m guessing it’s the ICV but not sure why I’m getting the 1st and the 5th code. I’ve read the 1st one is related to alternator but I am not sure about the 5th one. Has anyone experienced similar set of error codes? Attached Images __________________ 2011 E92 M3 ZCP AW / FR (Gone but missed) 2011 E90 M3 ZCP AW / FR (Current and will stay)
	Appreciate 0 Tweet Quote

12-08-2022, 05:03 PM	#2
TrackSpecM3 Enlisted Member 27 Rep 36 Posts Drives: BMW M3 Join Date: Nov 2022 Location: New Jersey iTrader: (1)	That 27B1 code should be an oxygen sensor as that will monitor the output of the secondary air system in that bank
	Appreciate 0 Quote