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

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  #1  
Old 10-05-2012, 01:49 PM
utfootball4 utfootball4 is offline
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2004 bmw x3

I'm getting code P0174 - any idea what this code is?
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  #2  
Old 10-05-2012, 02:42 PM
x3brian x3brian is offline
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I think that one means you are running lean...most likely has to do with a crack in the intake boot behind the MAF sensor, but could be something else with the intake. Odbii codes are universal and don't pinpoint specific failures. Also if it is the intake, after replacement you will have to clear the code...it won't go away automatically.

Any other symptoms, noises or other codes?
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  #3  
Old 10-05-2012, 06:03 PM
chrisk03 chrisk03 is offline
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Agree with x3brian, probably the intake boot. Well known issue on the X3...had same code last year on our 04 X3, replaced intake boot...fixed.
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  #4  
Old 10-05-2012, 06:41 PM
utfootball4 utfootball4 is offline
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Took it to my bmw guy - it read the same code along with bad gas cap. My guy told me to replace gas cap and see how things go...

Last edited by utfootball4; 10-05-2012 at 06:49 PM.
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  #5  
Old 10-05-2012, 06:42 PM
utfootball4 utfootball4 is offline
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Quote:
Originally Posted by x3brian View Post
I think that one means you are running lean...most likely has to do with a crack in the intake boot behind the MAF sensor, but could be something else with the intake. Odbii codes are universal and don't pinpoint specific failures. Also if it is the intake, after replacement you will have to clear the code...it won't go away automatically.

Any other symptoms, noises or other codes?
What kind of noises should i be looking for?
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  #6  
Old 10-05-2012, 10:37 PM
x3brian x3brian is offline
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Quote:
Originally Posted by utfootball4 View Post
What kind of noises should i be looking for?
Nothing in particular just curious if drivability has changed since MIL got activated.

Quote:
Originally Posted by utfootball4 View Post
Took it to my bmw guy - it read the same code along with bad gas cap. My guy told me to replace gas cap and see how things go...
Interesting. That code has more to do with intake than gas cap. I know my 09 has a separate dash light when the BMW gas cap code gets thrown. Keep us updated if problem comes back.

Last edited by x3brian; 10-05-2012 at 10:39 PM.
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  #7  
Old 10-06-2012, 04:05 AM
fivepointnine fivepointnine is offline
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I had that code and my intake book was cracked at the bellow part and my crank vent system was bad.
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  #8  
Old 10-06-2012, 08:06 AM
UncleJ UncleJ is offline
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My '06 also has a separate light for the gas cap.
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  #9  
Old 10-09-2012, 10:21 PM
Kevingovro Kevingovro is offline
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Intake boot, Disa Valve, oil seperator and hoses... Could be a number of things
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  #10  
Old 10-10-2012, 06:33 AM
utfootball4 utfootball4 is offline
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New gas cap and reset check engine light - all is well so far.
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  #11  
Old 10-10-2012, 06:35 AM
utfootball4 utfootball4 is offline
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Originally Posted by Kevingovro View Post
Intake boot, Disa Valve, oil seperator and hoses... Could be a number of things
Let's hope the problem is solved....
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  #12  
Old 10-10-2012, 07:00 AM
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legalfee legalfee is offline
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Quote:
Originally Posted by utfootball4 View Post
I'm getting code P0174 - any idea what this code is?
With mine it was MAF sensor. Cleared the code but it came back weeks later. I removed and cleaned the air filter and cleaned the MAF sensor with cleaner I got from Auto Zone.

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  #13  
Old 10-10-2012, 07:24 AM
Kevingovro Kevingovro is offline
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Yeah the code will most likely come back in 60-100 miles
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  #14  
Old 10-10-2012, 11:11 PM
utfootball4 utfootball4 is offline
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Originally Posted by Kevingovro View Post
Yeah the code will most likely come back in 60-100 miles
Been over 200miles - drive over 40miles to work each day....
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  #15  
Old 10-11-2012, 06:37 AM
utfootball4 utfootball4 is offline
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Originally Posted by chrisk03 View Post
Agree with x3brian, probably the intake boot. Well known issue on the X3...had same code last year on our 04 X3, replaced intake boot...fixed.
How much did the repairs cost?

Last edited by utfootball4; 10-11-2012 at 06:42 AM.
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  #16  
Old 10-11-2012, 08:56 AM
jdauria jdauria is offline
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You could probably change the intake boot yourself, but if not it should take <1hr of labor.
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  #17  
Old 10-11-2012, 11:51 AM
utfootball4 utfootball4 is offline
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Originally Posted by Kevingovro View Post
Yeah the code will most likely come back in 60-100 miles
If it is the intake boot how long could I go before getting it fixed - 7-10days?
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  #18  
Old 10-11-2012, 11:53 AM
utfootball4 utfootball4 is offline
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You could probably change the intake boot yourself, but if not it should take <1hr of labor.
I am not handy - ill probably make it worst....
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  #19  
Old 10-12-2012, 11:20 AM
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mlukas161 mlukas161 is offline
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Originally Posted by utfootball4 View Post
If it is the intake boot how long could I go before getting it fixed - 7-10days?
If its just a tear in the rubber intake boot you should have time. Your engine may run lean and waste some gas, but its not dangerous IMO.
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  #20  
Old 10-12-2012, 12:38 PM
jdauria jdauria is offline
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Originally Posted by mlukas161 View Post
If its just a tear in the rubber intake boot you should have time. Your engine may run lean and waste some gas, but its not dangerous IMO.
Second this, I drove around in my e46 for a couple weeks before fixing my lower intake boot. But you have to be sure thats the problem You can literally stick your hand/fingers and feel if there is a hole.
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  #21  
Old 10-12-2012, 10:18 PM
fivepointnine fivepointnine is offline
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intake boot is fairly easy to fix, you might bang up your knuckles trying to get that stupid plastic splash guard in and out. Biggest PITA is taking off the cabin filter housing
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  #22  
Old 10-13-2012, 06:47 AM
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X3-terrestrial X3-terrestrial is offline
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Quote:
Originally Posted by utfootball4 View Post
I am not handy - ill probably make it worst....
If the code hasn't come back in more than 200 miles, I wouldn't worry about it. The intake boot probably is fine and it just needed a new gas cap. The gasket around it develop cracks and dries out letting pressure escape from the tank.
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Last edited by X3-terrestrial; 10-13-2012 at 10:23 AM.
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  #23  
Old 10-13-2012, 09:25 AM
x3brian x3brian is offline
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+1. Don't worry about it unless the code comes back. This is minor in the grand scheme and really only impact mpg/idle.
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  #24  
Old 10-16-2012, 05:08 AM
utfootball4 utfootball4 is offline
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Originally Posted by X3-terrestrial View Post
If the code hasn't come back in more than 200 miles, I wouldn't worry about it. The intake boot probably is fine and it just needed a new gas cap. The gasket around it develop cracks and dries out letting pressure escape from the tank.
I spoke too soon - the light came back on last thur morning..... I notice when driving throughout my neighborhood when I step on the gas to accelerate I can hear a whistling noise for brief second...


**** It's a 2006 not 2004....

Last edited by utfootball4; 10-16-2012 at 05:16 AM.
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  #25  
Old 10-16-2012, 05:25 AM
jdauria jdauria is offline
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how many miles do you have on the x3? How is she running, sluggish? how is your MPG?
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TTFS IAT Kit
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