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DTC codes / P22xx · Fuel and air metering (injector circuits) / P22F4
P22F4 indicates that the powertrain control module (PCM) has detected an out-of-range or performance issue with the control circuit for the alternative fuel injector on cylinder 7. The PCM monitors the circuit for expected voltage or current behavior and sets this code when the signal does not match the commanded state, often due to a wiring fault, injector problem, or control module issue.
Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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