Powertrain
generic / SAE
P2A6F
Alternative Fuel Rail Pressure Regulator Inlet Pressure Too High
The measured inlet pressure of the alternative fuel rail pressure regulator exceeds the calibrated maximum. Pump regulator stuck high or downstream restriction.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / 6F
Possible causes
- Pump pressure regulator stuck high high
- Restriction downstream of regulator medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–6 h
- Component: alt fuel rail pressure regulator
- Component: alt fuel pump
- Component: afcm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012