P0190 Code: Fuel Rail Pressure Sensor Circuit Malfunction
🟠 Moderate severity · drivable
Yes, but the engine may run rough, stall, or be hard to start — fix it soon.
What P0190 means
The fuel rail pressure sensor measures fuel pressure inside the fuel rail so the computer can control the fuel pump and injectors. This code means the sensor circuit has an electrical fault, like an open or shorted wire. Without a good pressure reading, the engine may run poorly or have trouble starting.
Symptoms
- Check engine light on
- Rough idle or stalling
- Hard starting or no start
- Loss of power
- Poor fuel economy
Common causes
- most common: Faulty fuel rail pressure sensor
- common: Damaged wiring or connector in the sensor circuit
- less common: Corroded connector pins
- rare: Engine computer (PCM) fault
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the fuel rail pressure sensor | Yes | $80–250 |
| Inspect and repair the sensor wiring or connector | Yes | $20–100 |
Frequently asked questions
Can I drive with a P0190 code?
Usually yes, but the engine may idle rough, stall, or be hard to start. Get it fixed soon to avoid bigger problems.
What is the fuel rail pressure sensor?
It measures the fuel pressure in the fuel rail so the computer can keep the right amount of fuel going to the injectors.
How much does it cost to fix a P0190?
A new fuel rail pressure sensor is typically $80–250, plus labor if a shop does the job.
Related codes
P0191
P0191 Code: Fuel Rail Pressure Sensor Range/Performance
P0192P0192 Code: Fuel Rail Pressure Sensor Circuit Low
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.