What does code P22E8 mean?

DTC codes / P22xx · Fuel and air metering (injector circuits) / P22E8

P22E8Cylinder 4 Alternative Fuel Injector Control Circuit Range/Performance

P22E8 indicates that the powertrain control module (PCM) has detected an out-of-range or performance fault in the control circuit for the alternative fuel injector on cylinder 4. The PCM monitors the electrical circuit and expected fuel delivery, and it sets this code when the circuit's behavior does not match the commanded pulse or when the injector's response falls outside the expected range.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering (injector circuits)

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.