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Old 12-13-2012, 07:13 AM
HPIA4v2 HPIA4v2 is offline
Officially Welcomed to the 'Fest
Location: washington
Join Date: Mar 2006
Posts: 2,734
Mein Auto: E60, E71, E92
when you see the CEL, go to iDrive to see what it is.
Yep, any good tools reader can read log-faults (CEL that goes in and out known as "shadow" fault).

My guess is you have intermittent misfire either from dying injector or spark-plug. Dealer can sort it out for ya.
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