What does code P22DC mean?

DTC codes / P22xx · Fuel and air metering (injector circuits) / P22DC

P22DCCylinder 1 Alternative Fuel Injector Control Circuit Range/Performance

P22DC indicates that the powertrain control module has detected an out-of-range condition in the control circuit for the alternative fuel injector on cylinder 1. The computer monitors the circuit for expected voltage or current behavior and sets this code when the signal does not match the commanded injector pulse.

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.