DTC codes / Nissan codes / P1441
P1441 on Nissan vehicles indicates that the engine control module has detected a fault in the vacuum cut valve bypass valve circuit, which is part of the evaporative emissions control system. The computer monitors the valve's electrical circuit and the resulting pressure changes in the fuel tank; when the expected response is missing, it sets this code. This valve allows the EVAP system to release or hold vacuum during self-tests and refueling.
Guidance is general and written for Nissan vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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