Powertrain
generic / SAE
P228D
Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too High
Fuel pressure regulator A cannot reduce pressure below the upper control limit — typically a stuck-closed return path or runaway high-pressure pump.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / 8D
Possible causes
- Return path blocked or pump runaway high
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2500 €
- Estimated time: 1.5–6 h
- Component: fuel pressure regulator
- Component: high pressure fuel pump
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012