1、KW850 OBD2 automotive code reader is a professional diagnostic scan tool for car owners, which has Almost OBDII/EOBD Diagnostic Functions, including Read \u0026 Clear DTCs, Query Freeze Frame Data, Read Dynamic Datastream, Read Vehicle Information, O2 Sensor Test, EVAP Systems Test, On-board Monitor Test, Read Pending Fault Code, Read Permanent DTC, Read Readiness Status, Turn-off Malfunction Indicator Light (MIL), Print Data to PC, Permanent Code Retrieval, and more. 2、This code scanner works on most vehicles sold in the USA from the year of 1996; Supports all OBDII protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM and CAN. Works with English, German, French, Spanish, Italians, Dutch, Russian and Portuguese. It gets the power directly from the OBDII Data Link Connector in your vehicle. Fast scan and erase engine fault codes, let you decide if it\u0027s something you can fix or need more advanced help. Save money and time. 3、This automotive scanner with unique one-click I/M readiness status design, which fast to scan vehicle’s engine healthy status. Exclusive O2 Sensor Test, EVAP Test of Fuel Tank System(Mode 8) and Advanced On-board Monitoring(Mode 6) make you full control of vehicle running status. Red-Yellow-Green LED indicators allow you easily determine whether your vehicle meets the State Emission Monitor Status and assist you to pass the Smog Check. 4、KONNWEI OBDII diagnostic scanner has 2.8in Big Size LCD Color Screen. No need to install any APP, you can read codes on the screen. Anti-shock and slip designed, unique dust-resistant surface, give you more comfortable hand feeling, more durable and stronger. Audio feedback and 3 LED indicators tell you the trouble codes status and allow you to diagnose vehicles faster and more convenient to operate. 5、KW850 unit provides life-time FREE software update to fix the latest bugs or add newly parameters. Just download the software from website in the manual, then follow on-screen instructions to gooperate, very easy.