OBD-II code · Powertrain (generic, extended)

P2A7F Alternative Fuel Pump A Compression Stroke Valve Control Circuit/Open

The control circuit of the compression stroke valve in alternative fuel pump A reports a control circuit/open condition. Pump compression stroke cannot be commanded as expected.

Is it safe to drive with P2A7F?

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

Common causes

  • Most likelyOpen in valve control wire
  • PossibleOpen valve coil
  • Less likelyPin pushed back out of connector body

Symptoms

  • Check engine light on
  • Hard start, no start, or stalling under load
  • Power loss especially at high load or rpm
  • Possible long cranking time

Repair at a glance

Difficulty
Hard
DIY friendly
Best left to a mechanic
Typical labour
2–6 h
Emissions test
Likely to fail
Parts involved
Alt Fuel Pump A Compression Stroke Valve, Wiring Harness, Afcm

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