fuel mix lean?

2013 BMW X3
1,700,000 MILES • 2.0L • 4 CYL • TURBO • 4WD • AUTOMATIC
Avatar
ASHOK SAINI
  • MEMBER
  • 32 POSTS
I have sealed the hoses no leak but cannot figure out this error.
Images (Click to enlarge)
Attached Media
Attached Media
Apr 20, 2023 at 1:28 PM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
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)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Apr 21, 2023 at 12:31 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.