Fuel Rail Pressure Sensor Circuit
The ECU detects an out-of-range signal from the fuel rail pressure sensor. The voltage is outside calibrated min/max boundaries during normal operation.
Affected components
- Fuel rail pressure sensor
- Wiring harness
- Ecm
Common causes
- High likelihood: Rail pressure sensor failed
- Medium likelihood: Wiring or connector fault
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.