DTC codes / U05xx · Network communication / U0558
U0558 is a communication fault where a control module receives data from the Front Controls/Display Interface Module that fails validity checks, such as missing expected parameters or out-of-range values. The module that set the code detected that the incoming data frame was corrupted or not properly formatted, so it flagged the message as invalid rather than acting on unreliable information.
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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