Powertrain, generic (extended)

P2A2E Alternative Fuel Tank Shutoff Valve E Control Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2A2E is the open-circuit fault for shutoff valve E, the last letter of this series, so it only applies to systems with at least five gas cylinders, such as transit buses or heavy trucks. The module notices that the coil draws no current when commanded. No manufacturer documents P2A2E publicly, and TransEco's AFCM table lists valve E only with its Low and High codes. New Flyer offers a practical check: if the engine fails to start, confirm that the door of the fill box is shut and the solenoid wires are plugged in, because an open door also keeps all tank valves shut. Swapping the coil with a neighbour tells a coil fault from a wiring fault. CARB's monitoring rules for output components apply.

Likely causes

Valve E connector not plugged in after tank work
Open coil of valve E
Broken wire in the harness branch to tank E

Symptoms

  • Check engine light
  • Gas in cylinder E remains unused

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 ewiring harnessafcm

Related codes

P2A2FP2A30P2A31P2A2AP2A22

References: law.cornell.edu, static.nhtsa.gov, http:.