中文版的介绍，是一个基于OBD2的随车诊断协议ISO9141-1,进行汽车通信必须要支持此协议才能正常通信 -Chinese version of introduction, is a protocol based on the OBD2 to OBD ISO9141-1, a vehicle communications must support this protocol in order to properly communicate

OBD诊断协议SAE-J1979——201702(OBD diagnostic protocol SAE-J1979)