Alternative Fuel Rail/System Pressure - Too High
Alt fuel rail or system pressure above the expected operating range.
Affected components
- Alt fuel regulator
- Return valve
Common causes
- High likelihood: Regulator stuck closed
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
- 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.