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P0191: Fuel Rail Pressure Sensor Circuit Range/Performance
Severity: Medium Drive gently and get it diagnosed soon.
What does P0191 mean?
The fuel rail pressure sensor reading does not make sense compared to what the computer expects.
Generic OBD-II definition: Fuel Rail Pressure Sensor Circuit Range/Performance. Confirm applicability in your vehicle service information.
Common causes
- Faulty fuel rail pressure sensor
- Wiring or connector problem
- Actual fuel pressure problem
Symptoms
- Hard starting
- Hesitation
- Stalling
Can I keep driving with P0191?
Severity: Medium Drive gently and get it diagnosed soon.
If the check engine light is flashing or the car runs badly, stop driving and have it checked.
Typical fixes
- Compare sensor reading with a mechanical gauge
- Inspect wiring
- Replace sensor if confirmed bad