Codes P1151, po171 and po174

2000 FORD F-150
163,842 MILES • 4.6L • V6 • 2WD • MANUAL
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JACKNUT
  • MEMBER
  • 65 POSTS
These codes keep popping up. Truck will sometimes run rough or skip a little and eats gas. it use to only throw a slow acting 02 sensor code, but now it's doing this. no vacuum leak or intake leak.
Sep 28, 2019 at 1:42 PM
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STRAILER
  • ASE Certified Mechanic
  • 54,837 POSTS
  • ASE Certified Mechanic
Hello,

This is common when the MAF sensor needs to be replaced. here are two guides to help us fix the problem:

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

and

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

Please run down these guides and report back.
Sep 29, 2019 at 4:36 PM
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