Powertrain
generic / SAE
P2A6E
Alternative Fuel Rail Pressure Regulator Inlet Pressure Too Low
The measured inlet pressure of the alternative fuel rail pressure regulator falls below the calibrated minimum. Tank near empty, pump output insufficient, or upstream restriction.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberA / 6E
Possible causes
- Alt fuel tank near empty high
- Alt fuel pump output low 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