The OBD II system is designed to monitor emissions control systems and major engine components by performing continuous or periodic tests of specific components and vehicle conditions. When a problem is detected, the OBD II system illuminates a warning light (MIL) on the vehicle's dashboard to alert the driver usually with the phrase ?Check Engine? or ?Service Engine Soon?. Features: Engine fault code reader works with all OBDII compatible vehicles, standard OBDII 16 pin interface. This car diagnostic scanner can clear trouble codes and turn off the MIL (?Check Engine? light). This car diagnostic tool supports reading DTCs, displaying live data, freeze frame and I/M readiness status, etc. to determine the root cause of the warning light Check Engine (CEL) and turn it off to help detect any potential problems. Portable car fault detector, ergonomic design, medium size, perfect control. Quickly view real-time data and car error code on a single screen. Support 7 popular languages to fully meet market demand; Quickly read and clear vehicle error codes. One-button quick check frame number; The large screen independently displays real-time data. Features: Product model: TK209 OBDII code reader Display: TFT color screen Storage temperature: - 20 ~ -70 Operating temperature: 0-60 External power supply: 8. 0-30V power supplied via vehicle battery OBD interface: 16 pin OBD male Backlight reader type: power / white Package size: 23 * 13.2 * 4.3 cm Package weight: about 250 g Key OBDII functions: Read codes Clear Codes Clear / Erase Codes Live Data Onboard Monitoring Battery Voltage Test One-Click I/M Readiness Freeze frame Vehicle information Packing list: 1 x OBD II scanner 1 x manual user