Powertrain, generic (extended)

P22F0 Cylinder 6 Alternative Fuel Injector Control Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

Unlike the pure wiring faults P22EE/P22EF, this code is meant for a cylinder 6 gas injector circuit that is electrically intact but behaves implausibly, for example a current rise or switching response that does not fit the command. No manufacturer documents this code publicly: neither the Ford 2014 code list nor the Altech-Eco/TransEco CNG table contains it; both stop at Low and High for this cylinder. The basis is therefore the CARB requirement that output components be checked for proper functional response, not only for circuit continuity. If a manufacturer uses it, a sticking or fouled gas valve and resistance drift of the coil would be the likely triggers, with uneven running on gas.

Likely causes

Cylinder 6 gas valve sticking from oil or deposits carried in the gas
Coil resistance drifted out of the expected window
Corroded plug causing a slow current rise

Symptoms

  • Uneven idle or hesitation in gas mode
  • Cylinder 6 misfire count rising on gas only
  • Check engine light possible

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€100–800
Time0.5–3 h

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

Parts involved

alternative fuel injector

Related codes

P22EDP22EEP22EFP22ECP22F4P0306

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