The OBD system needs to be checked during vehicle annual inspections. Generally, the vehicle management office uses an OBD diagnostic tool to read the vehicle’s OBD fault information and related data. If it cannot be detected, it may be due to a problem with the OBD diagnostic tool, incompatibility with the communication protocol used by the vehicle’s ECU system, or a fault in the vehicle itself. In such cases, the vehicle management office can replace the diagnostic tool with a new one. Various problems may also be encountered during OBD system testing, such as vehicle fault codes, OBD communication failures, and OBD connection failures. Below are some solutions; let’s take a look.
