Powertrain
generic / SAE
P2A6A
Alternative Fuel Rail Pressure Regulator Pressure Sensor Range/Performance
The inlet pressure signal of the alternative fuel rail pressure regulator does not match plausibility checks against tank pressure and pump duty. Sensor drift.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / 6A
Possible causes
- Sensor zero drifted high
- Sensor mounting loose - bias offset medium
- Sensor element aged beyond calibration window low
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