Fuel mix lean?

Tiny
ASHOK SAINI
  • MEMBER
  • 2013 BMW X3
  • 2.0L
  • 4 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 1,700,000 MILES
I have sealed the hoses no leak but cannot figure out this error.
Images (Click to make bigger)
Thumb
Thumb
Thursday, April 20th, 2023 AT 1:28 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 43,072 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 make bigger)
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, April 21st, 2023 AT 12:31 PM

Please login or register to post a reply.

Related Engine Lean Content

How To Fix an Engine Backfire
VIDEO
How To Fix an Engine Backfire
Instructional repair video
Lean Exhaust
GUIDE
Lean Exhaust
Common Misconception: When an engine misfires, the cylinder runs lean, not rich, this is because the air to fuel ratio favors air by 14x. Therefore, an engine must be...
VIEW MORE

Sponsored links