Powertrain, generic (extended)

P22E9 Cylinder 5 Alternative Fuel Injector Control Circuit/Open

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P22E9 is the open-circuit code for the cylinder 5 gas injector and can only appear on engines with five or more cylinders, such as the V6 of GM's bi-fuel Impala or the 6.0-litre V8 of its bi-fuel Silverado and Sierra. The driver detects the break because current is missing when the injector is commanded on. No maker documents P22E9 publicly; TransEco's AFCM list and Ford's 2014 code list only use P22EA and P22EB for cylinder 5, and TransEco treats an open line as Low. On V engines the injector wiring of each bank often runs in its own harness branch, so check the cylinder 5 branch from the module to the injector. Bi-fuel vehicles fall back to gasoline; P0205 is the gasoline counterpart.

Likely causes

Open coil in the cylinder 5 gas injector
Loose connector in the harness branch for this bank
Open driver output in the gas or injector control module

Symptoms

  • Malfunction indicator lamp on
  • Engine returns to gasoline after switching to gas
  • Cylinder 5 misfire if gas operation continues

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€40–400
Time0.5–2.5 h

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

Parts involved

alternative fuel injector

Related codes

P22EAP22EBP22ECP22E5P0205P0305

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