DTC codes / P21xx · Fuel and air metering / P217A
P217A indicates that the engine control module (ECM) has detected an open circuit or abnormal supply voltage on the power feed to fuel injector group G, which is a set of injectors wired together on some engines. The ECM monitors the voltage on the injector supply circuit and sets this code when the expected voltage is missing or out of range, often due to a wiring fault, a failed injector, or a problem in the power distribution to that group.
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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