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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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  #1  
Old 12-19-2012, 08:58 PM
josiah0352 josiah0352 is offline
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Location: El Cajon, Ca
 
Join Date: Dec 2012
Posts: 15
Mein Auto: 2006 X3 M sport
Too Lean bank 1 and 2

Hi everyone, My 2006 X3 M sport recently had the service engine light go on. I hooked it up to my scanner and it gave me 4 codes P0171 and P0174 for each Bank. Car runs fine and everything is stock except the K&N air filter. Would that make a difference?? The car only has 68K miles on it. Any feed back would be very much appreciated.
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  #2  
Old 12-20-2012, 07:30 AM
jdauria jdauria is offline
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Mein Auto: E39 ///M5
check your MAF (probably needs a cleaning), lower intake boot might have a rip in it (very common - check this thread out; http://www.bimmerfest.com/forums/sho...d.php?t=499471), fuel filter may need replacement, vaccum leak somewhere
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Last edited by jdauria; 12-20-2012 at 07:31 AM.
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  #3  
Old 12-20-2012, 08:21 AM
codog2 codog2 is offline
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Location: boston, ma
 
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Mein Auto: 5
Yes, MAF was my problem a few years back on my 05

http://www.bimmerfest.com/forums/sho...855&highlight=
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  #4  
Old 12-20-2012, 06:34 PM
sflowers539 sflowers539 is offline
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Location: Ohio
 
Join Date: Nov 2011
Posts: 32
Mein Auto: 05' X3
It is crazy this has come up almost every week for the last few months, I never remember seeing it at all beforehand. Anyway, it could be a CVV valve, MAF tube, crankcase ventilation, or something similar. That is what it was for me, parts are cheap but the labor takes awhile, my car has been running great since I had it done with no new issues.
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  #5  
Old 12-20-2012, 08:11 PM
Supercourse Supercourse is online now
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Location: British Columbia, Canada
 
Join Date: Feb 2008
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Mein Auto: 2004 X3 2.5i
Quote:
Originally Posted by sflowers539 View Post
It is crazy this has come up almost every week for the last few months, I never remember seeing it at all beforehand.
It is interesting that these problem types appear in clusters.

It will be cracked expansion tanks for a few weeks, then window drive dogs, then washer pumps, then wet carpets, etc.

But believe me, the P0171 & P0174 is a recurring one.

At one time I was getting the impression that those who had just acquired a used X3 from a non-BMW dealer were over-represented.
(Previous owner didn't want to fix it and unloaded it. Dealer turns codes off to sell the car.)

But I know that it is more general.

Just too bad that it is one of the most non-specific code combinations.
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  #6  
Old 12-20-2012, 11:23 PM
josiah0352 josiah0352 is offline
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Location: El Cajon, Ca
 
Join Date: Dec 2012
Posts: 15
Mein Auto: 2006 X3 M sport
Well I cleaned the MAF sensor and replaced the the intake tube which did have a small rip in it, so we shall see in a few days if the SES light comes back on. Thanks a lot everyone for all the help.
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