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DTC codes / Volkswagen codes / P1574
P1574 on Volkswagen vehicles indicates that the engine control module (ECM) has detected an electrical fault in the circuit for the left engine mount solenoid valve, which is designed to vary the stiffness of the active engine mount for better vibration isolation. The ECM monitors the circuit for expected resistance and current flow, and when the measured values fall outside the programmed range, it sets this code and may disable the mount's active function.
Guidance is general and written for Volkswagen vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.
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