Last reported case: 8 years ago
Based on 3 owner reports, 3 from forums)
What is P0191?
P0191 indicates a problem with the fuel rail pressure sensor circuit, meaning the sensor's reading is outside its expected range or not performing correctly. This is a medium-severity powertrain issue that can affect engine performance and fuel delivery. Based on real data, this code is most frequently reported in Ford Mustangs, particularly 2020 models.
Common Causes:
- Faulty fuel rail pressure sensor (most common replacement part)
- Wiring or connector issues in the sensor circuit
- Problems with the fuel pump or fuel pressure regulator
Symptoms:
- Check Engine Light is illuminated
- Engine performance issues like hesitation or stalling
- Reduced fuel efficiency
- Rough idling or difficulty starting
🚗P0191 on 2020 FORD Mustang
This page focuses specifically on P0191 issues reported by 2020 FORD Mustang owners. The experiences and fixes below are from real owners of this exact vehicle.
Symptoms Reported by 2020 FORD Mustang Owners:
Parts Often Involved:
What Owners Say
Real experiences from 2020 FORD Mustang owners
“At first, the car would not rev past 4000, and with more driving, it would badly bog at 2500-3000 and then stall out completely. I took it to a dealership and they replaced the fuel filter thinking they had fixed it….NOPE!”View original
“I took it to a dealership and they replaced the fuel filter thinking they had fixed it….NOPE! Still having issues.”View original
“Car won't run: P0191, high fuel pressure My car got to go for a ride on a tow truck last night back to my house and I need some help diagnosing its issue.”View original
“My car got to go for a ride on a tow truck last night back to my house and I need some help diagnosing its issue. After searching here, I couldn’t find a lot to go on with cars with similar symptoms.”View original
“Hi bro , am having the same issue before changing the Fuel Pump , the car will be rough after driving it ( when it gets hot we can say ) i changed the fuel pump but it's a still getting the issue + p0191 code Any ideas ?”View original
These are real experiences shared by 2020 FORD Mustang owners on automotive forums and communities. Results may vary based on vehicle condition and repair quality.
About This Data
This page aggregates 3 discussions about P0191 from 2020 FORD Mustang owners across automotive communities.
Success rate (67%) is calculated from posts where owners confirmed whether their fix resolved the issue.
Last updated: 6/11/2017