Powertrain, generic (extended)

P22EB Cylinder 5 Alternative Fuel Injector Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P22EB reports that the cylinder 5 gas injector control circuit is too high, which TransEco Energy's AFCM list attributes to a short to power with the MIL on for bi-fuel use; Ford's 2014 code list likewise carries P22EB for the MIL. The injector stays closed, so cylinder 5 burns no gas and misfires lean, usually logged together with P0305. Gas injectors pull more current than gasoline injectors: Ford's 2003 bi-fuel CNG documentation notes that their drivers had to be stronger because of the extra heat, which also means a shorted coil quickly overloads the output. Measure the coil resistance and look for chafing against a live feed. P22EA is the low side; the gasoline injector of cylinder 5 reports P0274.

Likely causes

Cylinder 5 control wire chafed against a supply wire
Overheated cylinder 5 gas injector with shorted turns
Overloaded driver output in the gas control module

Symptoms

  • Malfunction indicator lamp on
  • Lean misfire on cylinder 5 in gas mode, often with P0305
  • Normal running on gasoline

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–450
Time0.5–3 h

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

Parts involved

alternative fuel injector

Related codes

P22E9P22EAP22ECP22E7P0274P0305

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