DTC codes / P34xx · Auxiliary emission controls / P3492
P3492 is a generic powertrain code indicating that the powertrain control module (PCM) has detected an abnormally high voltage on the control circuit for the cylinder 12 deactivation/intake valve. This circuit is used on engines with cylinder deactivation or variable valve timing to disable the intake valve on cylinder 12, and a high voltage reading typically means the circuit is open, shorted to power, or the solenoid is faulty.
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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