What does code P22F8 mean?

DTC codes / P22xx · Fuel and air metering (injector circuits) / P22F8

P22F8Cylinder 8 Alternative Fuel Injector Control Circuit Range/Performance

P22F8 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 8. The PCM monitors the circuit for expected voltage and current behavior, and when the signal does not match the commanded pulse width or falls outside the valid operating range, it stores this code and may illuminate the malfunction indicator lamp (MIL).

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.