Powertrain, generic (extended)

P2A2D Alternative Fuel Tank Shutoff Valve D Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2A2D reports excessive voltage on the control circuit of shutoff valve D. The AFCM fault list from TransEco Energy names a short to power, lights the MIL and keeps the gas system in service; P2A1D stands next to it. Ford's 2014 Boss 302S list includes P2A2D without the MIL marker. A wire pinched against a supply cable, a module output that stays on or an error while wiring a conversion kit are the likely findings. The practical concern is that the solenoid may remain energized, so cylinder D is not sealed when the engine stops or a crash cuts the supply. Before any work on the harness, close the manual valves on the tanks. P2A2C covers the low readings of this valve, P2A29 the high fault on valve C.

Likely causes

Valve D lead pinched against a supply cable
Module output for valve D stays on
Error while wiring a conversion kit

Symptoms

  • Check engine light
  • Tank D possibly open with the engine off

Repair estimate

DifficultyHardWorkshop job
Parts and labour€80–1,200
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

alt fuel tank shutoff valve dwiring harnessafcm

Related codes

P2A2AP2A2BP2A2CP2A29P2A31

References: http:, performanceparts.ford.com, law.cornell.edu.