Alternative Fuel Rail Pressure Regulator Pressure Sensor Circuit
The AFCM detects a generic fault on the pressure sensor at the inlet of the alternative fuel rail pressure regulator. Regulator inlet pressure cannot be monitored reliably.
Affected components
- Alt fuel rail pressure regulator
- Alt fuel pump
- Afcm
Common causes
- High likelihood: Pressure sensor failed
- Medium likelihood: Wiring or connector fault
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
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.