The OBD II system is designed to monitor emission control systems and key engine components by performing either continuous or periodic tests of specific components and vehicle conditions. When a problem is detected,the OBD II system turns on a warning lamp(MIL)on the vehicle instrument panel to alert the driver typically by the phrase of"Check Engine"or"Service Engine Soon”.   Features: Engine fault code reader works with all OBDII compliant vehicles, 16pin OBDII standard 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 & I/M Readiness etc to figure out the root cause of the Check Engine Light (CEL) and turning it off to help you detect any potential problems.  Handheld car fault detector, ergonomic design, medium size, perfect control.  Quickly view the real-time data and car fault code through unique screen display.  Support 7 popular languages to fully meet market demand; Quickly read and clear vehicle fault codes.  One-button quick check frame number; Large screen independently display real-time data.   Specifications: Product model: TK209 OBDII code reader;  Display: TFT color display;  Storage temperature: - 20 ~ -70℃;  Operating Temperature: 0-60℃;  External Power: 8. 0 to 30V power provided via vehicle battery;  OBD interface: 16 pin OBD male;  Backlight drive type: power / white;  Package size: 23*13.2*4.3CM;  Package weight: Approx.250g;   Key OBDII Functions: Read Codes;  Erase Codes;  Clear/Erase Codes;  Live Data;  On-Board Monitoring;  Battery Voltage Test;  One-Click I/M Readiness;  Freeze Frame;  Vehicle Information;   Packing list: 1 x OBD II Scanner;  1 x User Manual