DTC codes / U02xx · Lost communication with a control module / U0225
U0225 is a network communication code indicating that a control module on the vehicle's data bus has lost contact with the door window motor assigned to position D. The computer detected that expected messages from that specific window motor stopped arriving within the required time window, which usually points to a wiring, connector, or motor fault rather than a mechanical window problem.
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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