Works on ALL OBD II Enabled vehicles, both Gasoline and Diesel cars - domestic and imported Features the unique patented One-Click Readiness Key for quick State Emissions readiness check and drive cycle verification built-in speaker provide both visual and audible tone for readiness verification Retrieves generic (P0, P2, P3 and U0), manufacturer specific (P1, P3 and U1) codes and pending codes Easily determines the cause of the Check Engine Light(MIL) Turns off Check Engine Light (MIL), clears codes and resets monitors Views freeze frame dataThe KONNWEI KW309 OBD2 / EOBD / CAN Car Diagnostic Scanner supports all 10 OBDII test modes on all OBDII compliant vehicles for a complete diagnosis. the KONNWEI KW309 is truly the ultimate in power and affordability, allowing users to do their jobs faster Displays monitor and I/M readiness status (emissions) Reads live PCM datastream Displays live O2 sensor test data EVAP System test data Live sensor data in text mode and graph mode (1996 and newer vehicles) Reads, stores and playbacks live sensor data Troubleshooter code tips guide technicians to the root cause of a trouble code faster, saving diagnosis and repair time Battery Voltage real time monitoring, better than other expensive item from others brand. Built-in DTC look-up library and display definition Package included: 1 x KONNWEI KW310 Car Engine Trouble Code Detector Scanner 1 x English and Chinese User Manual Other things not included