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7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

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Old 05-04-2011, 10:22 AM
Turbotoma Turbotoma is offline
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Location: Newcastle upon tyne
Join Date: May 2011
Posts: 22
Mein Auto: 2004 745li individual
272c & 272d fault codes???

Hi guys

Sorry 2be a pest just you guys have been so helpful with my problems hopefully I can get some good advice again.

Had car on my mates computer and these fault codes came up
272d only these 2 came up and I was wondering if these faults make the car run with a intermittent bad idle? Sometimes the idle of the car jumps up n down and I wondered if this could be the course or something more sinister that won't show up on a diagnostic machine.

Thanks again guys

Sent from my Desire HD using Bimmer App
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Old 05-04-2011, 12:04 PM
DFEL750I's Avatar
DFEL750I DFEL750I is offline
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Location: Toronto
Join Date: Apr 2010
Posts: 1,898
Mein Auto: 750I
Check this thread for fault codes posted by Wilson


These are fuel mixture codes which can definitely be a reason for idle surges. There could be a number of things that can affect the air, spark, fuel mixture that can throw a code like this. The common culprits are :

Vacuum leaks
Bad Mass air flow sensor
Bad oxygen sensor
Bad fuel injectors
Clogged fuel filter
Crankcase ventilation valves.

I am currently troubleshooting a similar problem which I have yet to nail down. If you are not handy and dont have diagnostic tools you need to have the car properly diagnosed. Alot of things here that can cost a bit of money if you just start throwing parts blindly at this problem.
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