DTC codes / U02xx · Lost communication with a control module / U024D
U024D is a generic network communication code indicating that a control module (typically the body control module or a gateway module) has lost the controller area network (CAN) signal from the seat control module designated as 'J'. The computer detected that expected periodic messages from that module stopped arriving within the required time window, which may be due to a wiring fault, a failed module, or a power/ground issue.
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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