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DTC codes / P22xx · Fuel and air metering (injector circuits) / P22DD
P22DD indicates that the powertrain control module (PCM) has detected an open circuit or abnormal voltage on the control circuit for the alternative fuel injector for cylinder 2. This means the PCM cannot properly command that injector to deliver fuel when the engine is running on the alternative fuel source, such as compressed natural gas (CNG) or liquefied petroleum gas (LPG).
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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