07 335i is acting weird throwing some codes.

JTinNC82 · 10-15-2014, 11:08 AM

I was driving the other night and car seemed a lil funny like it had a lil miss to it and gave it a lil gas and started sputtering bad and check engine lights was flashing. Then it just went away and seemed normal. Then it seemed today it was acting a lil funny again. I was running map 4 and switched it to map 2 and didnt notice it as much. Not sure if I have a O2 going bad, fuel pump, plug or coils. Here are the codes i pulled that night.

X_Drive · 10-15-2014, 10:01 PM

A faulty ignition coil will cause those symptoms. A way to verify this is to cross-swap it with another coil, say cyl #1, then see if the misfire migrates with the coil in question. If it doesn't then you can start looking at other things. However, it's probably a coil that is starting to fail.
HTH

JTinNC82 · 10-16-2014, 10:34 PM

Looks like its an o2 going bad. Ive cleared code and keep getting the o2 behind cat 2 showing up. Gonna try to replace it and see what happens

10-15-2014, 11:08 AM	#1
JTinNC82 New Member 1 Rep 27 Posts Drives: 2009 135i Join Date: May 2014 Location: Lewisville, NC iTrader: (0)	07 335i is acting weird throwing some codes. I was driving the other night and car seemed a lil funny like it had a lil miss to it and gave it a lil gas and started sputtering bad and check engine lights was flashing. Then it just went away and seemed normal. Then it seemed today it was acting a lil funny again. I was running map 4 and switched it to map 2 and didnt notice it as much. Not sure if I have a O2 going bad, fuel pump, plug or coils. Here are the codes i pulled that night. Attached Images
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10-15-2014, 10:01 PM	#2
X_Drive Second Lieutenant 8 Rep 263 Posts Drives: E46, E91, F21 Join Date: Apr 2014 Location: Northwest iTrader: (0) Garage List 2017 M140i LCI [0.00] 2005 E46 325xi [0.00] 2011 E91 328i xDriv ... [0.00]	A faulty ignition coil will cause those symptoms. A way to verify this is to cross-swap it with another coil, say cyl #1, then see if the misfire migrates with the coil in question. If it doesn't then you can start looking at other things. However, it's probably a coil that is starting to fail. HTH
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10-16-2014, 10:34 PM	#3
JTinNC82 New Member 1 Rep 27 Posts Drives: 2009 135i Join Date: May 2014 Location: Lewisville, NC iTrader: (0)	Looks like its an o2 going bad. Ive cleared code and keep getting the o2 behind cat 2 showing up. Gonna try to replace it and see what happens
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