Code P0191?

Tiny
MATTDONE
  • MEMBER
  • 2012 BUICK VERANO
  • 2WD
  • AUTOMATIC
  • 125,157 MILES
So a couple weeks ago I had a check engine light come on. I ran the codes at my nearest AutoZone and got a code p0191. I drove it to my nearest buddy's house (15 mins) and by the time I got there the check engine light was off. What should I do?
Tuesday, March 25th, 2025 AT 3:10 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,453 POSTS
This is a super common repair; you need to replace the fuel pressure sensor. There is a chance the high- or low-pressure fuel pump is having an issue, but this is the first step.

P0191 - Fuel Rail Pressure Sensor "A" Circuit Range/Performance

Check out the images (below). Let us know how it goes.
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Thursday, March 27th, 2025 AT 9:41 AM

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