Powertrain
generic / SAE
P2C20
Cold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too High
During cold start, fuel pressure regulator A overshoots target pressure - actual rail pressure rises above the calibrated upper limit.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberC / 20
Possible causes
- Regulator stuck closed at cold start high
- Fuel return path blocked by cold viscosity medium
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: medium
- DIY: shop recommended
- Estimated cost: 200–1200 €
- Estimated time: 1–5 h
- Component: fuel pressure regulator a
- Component: fuel rail
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012