What does code P22D9 mean?

Q: What does code P22D9 mean?

Cylinder 1 Alternative Fuel Injector Control Circuit/Open. P22D9 indicates that the powertrain control module (PCM) has detected an open circuit or excessive resistance in the control circuit for the alternative fuel injector on cylinder 1. This means the computer is not seeing the expected electrical load when it commands the injector to fire, so the injector may not be delivering fuel on that cylinder.

DTC codes / P22xx · Fuel and air metering (injector circuits) / P22D9

P22D9Cylinder 1 Alternative Fuel Injector Control Circuit/Open

P22D9 indicates that the powertrain control module (PCM) has detected an open circuit or excessive resistance in the control circuit for the alternative fuel injector on cylinder 1. This means the computer is not seeing the expected electrical load when it commands the injector to fire, so the injector may not be delivering fuel on that cylinder.

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.