OBD-II code · Powertrain (generic, extended)
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.
Is it safe to drive with P2A6F?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyPump pressure regulator stuck high
- PossibleRestriction downstream of regulator
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–6 h
- Emissions test
- Likely to fail
- Parts involved
- Alt Fuel Rail Pressure Regulator, Alt Fuel Pump, Afcm
Related codes
- P2A6CAlternative Fuel Rail Pressure Regulator Pressure Sensor Circuit High
- P2A6DAlternative Fuel Rail Pressure Regulator Pressure Sensor Circuit Intermittent/Erratic
- P2A6EAlternative Fuel Rail Pressure Regulator Inlet Pressure Too Low
- P2A70Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit
- P2A71Alternative Fuel Hydraulic Fuel Pump Select Valve Control Range/Performance
- P2A72Alternative Fuel Hydraulic Fuel Pump Select Valve Control Circuit Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.