This product is mainly used for fault diagnosis and data reading Automobile engine and emission data, diagnosis of automobile engine failure, troubleshooting code. This product can diagnose the health condition of the vehicle, alarm the safety condition of the vehicle, monitor the running condition of the vehicle in real time, and display the diagnostic value of various vehicles Indicators (voltage, engineering coolant temperature, fue correction, engine load, etc.) Check the car, then read the fault code and remove it, and so on. Locate the OBD port in the vehicle. The OBD interface may be located in different locations Different car types of places. (Usually located at the bottom of the driver's side of the dashboard above the accelerator pedal) Download APP Use mobile browser to scan the QR code