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ISO 14229-1:2020

Road vehicles - Unified Diagnostic Services (UDS)

📅 Issue date：2020 🔄 Effective date：2020 🌍 Type：国际标准（UDS）

📑 Table of Contents

01 Scope

ISO 14229-1 specifies the Unified Diagnostic Services (UDS) client/server protocol for road vehicles over DoCAN/DoIP, covering fault read/clear, parameter R/W, routine control and flashing — the core of vehicle diagnostics and end-of-line testing.

02 Normative references

  1. ISO 14229-1 UDS
  2. ISO 15765 DoCAN
  3. ISO 13400 DoIP

03 Terms and definitions

SID
Service Identifier byte, e.g. 0x10/0x22/0x27.
DID
Data Identifier for read/write of specific data.

04 Technical requirements

Core services
0x10 DiagnosticSessionControl, 0x22 ReadDataById, 0x2E WriteDataById, 0x27 SecurityAccess, 0x19 ReadDTC, 0x14 ClearDTC, 0x3E TesterPresent, 0x34/36/37 download/transfer.
Sessions
Default, programming, extended diagnostic sessions with security access.

📎 Related standards

ISO 26262 Functional Safety ISO 16750 Environmental
Disclaimer：This page is a technical summary of the corresponding standard for quick reference. All limits, clauses and methods are subject to the official publication and its latest amendments; formal compliance assessment must refer to the official issued text.