Closed Loop Fuel Pressure Control At Limit - Pressure Too High
Closed-loop fuel pressure control hit its lower limit because rail pressure is structurally too high.
Affected components
- Fuel pressure regulator
- Return valve
Common causes
- High likelihood: Regulator stuck closed
Possible symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
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.