P0191: Fuel rail pressure sensor circuit range/performance
Drive carefully. Get it checked within a week or two.
Can I drive with P0191?
Yes, but drive carefully and get it checked soon. Fuel rail pressure readings are erratic, causing hesitation during acceleration.
What does P0191 mean?
P0191 stands for Fuel Rail Pressure Sensor Circuit Range/Performance.
Symptoms you may notice
- Engine sputters or cuts out under heavy acceleration
- Long cranking time before engine starts
- Loss of engine power when driving up hills or highway speeds
How much does it cost to fix?
Repair costs for code P0191 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Failing fuel rail pressure sensor
- Weak fuel pump or dirty fuel filter
- Defective fuel pressure regulator
- Intermittent wiring contact
What to do next
- Replace the fuel filter if due for service.
- Check fuel rail pressure under wide-open acceleration.
- Replace the fuel rail pressure sensor.
Last updated: October 2026
Related codes
General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0191 indicates the fuel rail pressure is fluctuating outside expected boundaries. Common on Ford and Volvo vehicles.