Fault diagnosis method, device and system

The invention relates to the field of automotive electronics, and provides a fault diagnosis method, device and system, the method is applied to a webpage end server, and the method comprises the following steps: receiving a fault message sent by a TBOX; determining a target communication matrix from a plurality of pre-stored communication matrixes, and analyzing the fault message based on the target communication matrix; and generating a fault diagnosis result based on the analysis result of the fault message. Under the condition that the vehicle communication matrix is changed, software and hardware of the vehicle do not need to be updated, the vehicle cost is reduced, and the applicability of the software and hardware of the vehicle is effectively improved. 本发明涉及汽车电子领域，提供一种故障诊断方法、装置及系统，该方法应用于网页端服务器，包括：接收TBOX发送的故障报文；从预先存储的多个通讯矩阵中确定目标通讯矩阵，并基于目标通讯矩阵对故障报文进行解析；基于故障报文的解析结果生成故障诊断结果。本发明在车辆通讯矩阵变更的情况下，无需对车辆的软硬件进行更新，降低了车辆成本，且有效提高了车辆软硬件的适用性。