Powertrain, generic (extended)

P2A30 Alternative Fuel Tank Shutoff Valve E Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2A30 sets when the control circuit of shutoff valve E reads low. TransEco Energy's AFCM v1.4 table names a short to ground or an open lead as the reason and keeps both dedicated and bi-fuel vehicles running, MIL on; P2A20 is listed beside it. Ford's Boss 302S code list contains P2A30 as well. A low reading on valve E alone points to the branch of the harness serving that cylinder. If B to E show low faults together, a shared ground or a connector close to the module is the more likely culprit. Tanks of this kind hold gas at up to about 24,800 kPa, so only trained staff should open any part of the system. P2A31 is the matching high fault, P2A2E the open circuit.

Likely causes

Control lead of valve E touching ground
Shared ground or connector near the module (several low codes together)
Shorted coil in valve E

Symptoms

  • Check engine light
  • Gas from tank E not usable

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

P2A2EP2A2FP2A31P2A2CP2A24

References: http:, performanceparts.ford.com, static.nhtsa.gov.