P0191 – Fuel Rail Pressure Sensor Range/Performance
Description
The ECM detects abnormal or unstable fuel rail pressure sensor signals.
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View Recommended ScannersSymptoms
- Hard starting
- Poor acceleration
- Engine stalls
- Check Engine light
Causes
- Faulty fuel rail pressure sensor
- Weak fuel pump
- Clogged fuel filter
- Wiring issues
Diagnosis
- Measure fuel pressure
- Inspect wiring
- Test fuel pump
- Check sensor signal stability
Repair
- Replace fuel pressure sensor
- Replace fuel pump
- Replace fuel filter
- Repair wiring
