Road vehicles — Unified diagnostic services (UDS) — Part 1: Application layer

This international specification establishes a standardized framework for diagnostics on road vehicles. It defines the protocol and services required for communication between diagnostic tools and vehicle control units, ensuring compatibility across different manufacturers and models. The document outlines the necessary requirements for session management, diagnostic routines, and data transmission, facilitating efficient troubleshooting and maintenance. By implementing this system, technical personnel can access critical vehicle data and perform targeted interventions with greater precision. The specification covers various diagnostic services, including reading data identifiers, writing data to control units, and initiating control functions. It also addresses error handling and security aspects to maintain data integrity during interactions. This approach supports the growing complexity of modern automotive electronics by providing a unified language for diagnostic operations. The standard serves as a foundational reference for the development of diagnostic software and hardware, enabling consistent application across diverse vehicle architectures and market segments worldwide.