What does code P22DF mean?

Q: What does code P22DF mean?

Cylinder 2 Alternative Fuel Injector Control Circuit High. P22DF indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the control circuit for the alternative fuel injector serving cylinder 2. This typically means the circuit is shorted to voltage, the injector coil is open, or the driver inside the PCM is not pulling the circuit low as commanded. The PCM sets the code when the commanded state and the actual voltage on the circuit do not match.

DTC codes / P22xx · Fuel and air metering (injector circuits) / P22DF

P22DFCylinder 2 Alternative Fuel Injector Control Circuit High

P22DF indicates that the powertrain control module (PCM) has detected an abnormally high voltage on the control circuit for the alternative fuel injector serving cylinder 2. This typically means the circuit is shorted to voltage, the injector coil is open, or the driver inside the PCM is not pulling the circuit low as commanded. The PCM sets the code when the commanded state and the actual voltage on the circuit do not match.

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.