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Codes P1151, PO171 and PO174

Tiny
JACKNUT
  • MEMBER
  • 2000 FORD F-150
  • 4.6L
  • V6
  • 2WD
  • MANUAL
  • 163,842 MILES
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.
Saturday, September 28th, 2019 AT 1:42 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
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.
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Sunday, September 29th, 2019 AT 4:36 PM

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