DTC codes / P34xx · Auxiliary emission controls / P3474
P3474 is a generic powertrain code indicating that the engine control module (ECM) has detected a performance fault in the cylinder 10 deactivation or intake valve control circuit. The ECM commands the cylinder 10 valve to change state and monitors the circuit and its effect on engine operation, but the expected response is not achieved within the calibrated time or range.
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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