Code Definition

U0258 (87-0A) — Lost Communication With Radio Transceiver Module

System: Network Communication  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About U0258

U0258 is a generic (obd-ii standard) network communication diagnostic trouble code. It belongs to the U-prefix family of codes, which covers inter-module network communication (CAN, LIN, FlexRay, or similar) faults.

Scanning & clearing: Network (U) codes report communication faults between modules. When diagnosing U-codes, checking the vehicle's CAN bus integrity, supply/ground at each module, and reading all modules for related faults is usually the first step.

Because U0258 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The vehicle control modules communicate over the Controller Area Network (CAN) to exchange audio, infotainment, and system status data. DTC U0258 sets when one or more modules fail to receive the expected CAN messages from the Radio Transceiver Module within a calibrated time period. A failure type byte of 87 with a 0A qualifier indicates a missing or invalid message where communication has stopped. This is logged when the radio transceiver module is offline due to loss of power or ground, a CAN circuit fault, or an internal module failure. The radio transceiver module handles audio tuning and...

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