: The fourth edition (ISO 14229-1:2026) is currently in the final publication stages as of May 2026.
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Unified Diagnostics Services (UDS), standardized under ISO 14229-1, serves as the backbone of modern automotive diagnostic systems. It defines the layer-7 (application layer) protocol used by electronic control units (ECUs) to communicate with diagnostic testers for fault code reading, firmware updates, and live data monitoring. : The fourth edition (ISO 14229-1:2026) is currently
Modifying VIN parameters, calibration maps, or configurations. 0x31 standardized under ISO 14229-1