DTC codes / U05xx · Network communication / U0593
U0593 is a communication fault where one or more control modules receive invalid or corrupted data from the drive motor control module B over the vehicle's controller area network (CAN) bus. The receiving module detects that the data frames from the drive motor control module B do not match the expected format or checksum, so it flags the signal as invalid rather than simply missing.
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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