Code Definition

U0208 (87) — Lost Communication With Seat Control Module A

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

About U0208

U0208 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 U0208 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 share operational and status data. DTC U0208 sets when one or more modules do not receive the required CAN messages from Seat Control Module A within a calibrated time period. A failure type byte of 87 reported with the code denotes a missing or invalid message, indicating the seat control module has stopped communicating rather than sending implausible data. The fault is typically caused by loss of power or ground to the seat module, a CAN circuit fault, or an internal module failure. Seat Control Module A usual...

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