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
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References
sae:J2012