Fuel Pressure Regulator D Exceeded Control Limits - Pressure Too High
Fuel pressure regulator D cannot maintain commanded pressure - actual rail pressure rises above the calibrated upper limit.
Affected components
- Fuel pressure regulator d
- Fuel rail
Common causes
- High likelihood: Regulator stuck closed
- Medium likelihood: Fuel return path blocked
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
Related codes
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.