Highlight description: [Automatic detection] The OBD2 scanner supports searching for the reason for the automatic illumination of the engine indicator light, and can read general and specific fault codes created by the manufacturer. The manufacturer's database includes over 3000 codes. 【 Intelligent Scan 】 This Bluetooth OBD2 scanner can display real-time sensor data, including engine speed, calculated load value, coolant temperature, fuel system status, vehicle speed, short-term fuel correction, long-term fuel correction, intake manifold pressure, timing advance, intake temperature, air speed, throttle position, absolute oxygen sensor voltage/related short-term fuel correction, and fuel pressure. [Compatible Applications and Systems] This device is only suitable for Android phones or tablets. We recommend downloading applications such as Torque Lite, Torque Pro, OBD Car Doctor, DashCommand, etc. on Google Play, some of which require payment. It is suitable for most 1996 and later cars or light trucks sold in the United States, including all vehicles in the United States, Europe, and Asia. In addition, it only supports gasoline vehicles and does not support diesel vehicles (which may not support hybrid or electric vehicles). It supports most OBDII protocols, such as ISO15765, SAE J1939 CAN, KWP, and ISO9141. [Easy to use] Insert this OBD2 scanner into the OBD2 port of the car, press the ignition button, enable Bluetooth on the Android device, search for "OBDII" and pair it with it (code 1234), run the downloaded application, and wait for it to successfully connect to your car ECU.