OBD-II code · Powertrain (generic, extended)

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.

Is it safe to drive with P2A6A?

The car may go into limp mode (reduced power). Get it diagnosed before a long trip.

Common causes

  • Most likelySensor zero drifted
  • PossibleSensor mounting loose - bias offset
  • Less likelySensor element aged beyond calibration window

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

Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.