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DTC codes / P34xx · Auxiliary emission controls / P341D
P341D indicates that the powertrain control module has detected a performance fault in the control circuit for the exhaust valve on bank 2, which is the side of the engine that does not contain cylinder number one. The computer monitors the circuit for expected electrical behavior and commands the valve to change state, but the resulting feedback or circuit response does not match what the software expects.
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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