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BMW
X3
Engine
Symptoms
Lean
fuel mix lean?
2013 BMW X3
1,700,000 MILES • 2.0L • 4 CYL • TURBO • 4WD • AUTOMATIC
ASHOK SAINI
MEMBER
32 POSTS
FOLLOW
I have sealed the hoses no leak but cannot figure out this error.
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Apr 20, 2023 at 1:28 PM
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STRAILER
CERTIFIED EXPERT
53,854 POSTS
This is usually caused by one of two things, either the fuel filter is clogged up or the MAF needs to be replaced.
Here is a guide to help as well and I have added the filter and sensor locations in the diagrams below:
https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers
Clear the codes once the job is complete to recheck the system. Check out the images (below). Please let us know what happens.
Images (Click to enlarge)
Apr 21, 2023 at 12:31 PM