What Is An OBD2 Scanner?

OBD2 (On-Board Diagnostics, second generation on-board diagnostic system) scanner is a device used to communicate with the car's OBD2 interface and read vehicle diagnostic information. It can be connected to the OBD2 interface of the vehicle, and obtain and interpret the vehicle's fault code, sensor data and other relevant information through the communication protocol.

OBDII scanners are widely used in modern car maintenance and diagnosis, it can help car owners, technicians and auto repair shops to quickly locate and solve vehicle faults. By communicating with the vehicle's computer system, OBD2 scanners can provide detailed trouble codes for vehicles from 1996 and later.

The OBD2 scanner communicates with the vehicle's diagnostic system through the standard OBD2 interface. This interface is usually located near the dashboard under the driver's seat. The scanner may use a limited connection or a Bluetooth connection.

OBD2 scanner supports reading vehicle fault codes and providing real-time sensor data, such as engine speed, vehicle speed, oil temperature, etc. Unlike OBD2 code readers, OBD2 scanners can also perform some other functions, such as clearing fault codes, performing system tests and monitoring certain vehicle parameters.

It is important to note that the functionality and operation of OBD2 scanners may vary by make and model. Therefore, when using an OBD2 scanner, always refer to the appropriate user manual and follow the manufacturer's instructions.