ISO 15031-5:2015标准是车辆排放相关诊断通信的国际标准，该标准规定了车辆与外部设备之间的通信协议、数据格式、诊断服务等方面的要求。该标准的主要目的是确保车辆排放相关的诊断能够准确、可靠地进行，以便及时发现和解决车辆排放问题，保护环境和人类健康。

该标准适用于所有类型的车辆，包括轻型车辆、重型车辆和摩托车等。该标准规定了车辆与外部设备之间的通信协议、数据格式、诊断服务等方面的要求，以确保车辆排放相关的诊断能够准确、可靠地进行。该标准还规定了诊断服务的种类和功能，包括故障码读取、故障码清除、实时数据流读取、冻结帧读取、组件测试等。

ISO 15031-5:2015标准的实施可以帮助车辆制造商和维修服务提供商更好地进行车辆排放相关的诊断，提高车辆排放性能，保护环境和人类健康。该标准的实施还可以促进车辆制造商和维修服务提供商之间的合作和交流，推动车辆排放相关诊断技术的发展和创新。

相关标准
- ISO 15031-1:2014 Road vehicles — Communication between vehicle and external equipment for emissions-related diagnostics — Part 1: General information and use case definition
- ISO 15031-2:2014 Road vehicles — Communication between vehicle and external equipment for emissions-related diagnostics — Part 2: Terms, definitions, abbreviations and acronyms
- ISO 15031-3:2014 Road vehicles — Communication between vehicle and external equipment for emissions-related diagnostics — Part 3: Diagnostic connector and related electrical circuits, specification and use
- ISO 15031-4:2014 Road vehicles — Communication between vehicle and external equipment for emissions-related diagnostics — Part 4: Requirements for emissions-related systems
- ISO 14229-1:2020 Road vehicles — Unified diagnostic services (UDS) — Part 1: Specification and requirements