DTC codes / U02xx · Lost communication with a control module / U0224
U0224 is a generic network communication code indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with the door window motor designated as 'C'. The computer detected that expected periodic status messages from that specific window motor stopped arriving within the required time window, which sets the code and usually illuminates the warning light.
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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