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DTC codes / U03xx · Software and configuration mismatches / U0348
U0348 is a communication fault indicating that a control module on the vehicle's network cannot establish software compatibility with the hybrid or electric vehicle battery interface control module, often referred to as module O. The computer has detected that the software version, calibration, or handshake protocol between these modules does not match what is expected, preventing normal data exchange.
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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