1Works on All Obd Ii Enabled vehicles, both Gasoline and cars? domestic and imported. 2? the unique patented OneClick Readiness Key for quick State Emissions readiness check and drive cycle verification. 3builtin speaker provide both visual and audible tone for readiness verification 4Retrieves generic (P0, P2, P3 and U0), manufacturer specific (P1, P3 and U1) codes and pending codes 5Easily determines the cause of the Check Engine Light(Mil) 6Turns off Check Engine Light (Mil), clears codes and resets monitors 7Konnwei KW309 OBD2 / Eobd / Can car diagnostic scanner supports all 10 Obdii test modes on all Obdii compatible vehicles to complete the diagnosis. 8Displays monitor and I/M readiness status (emissions) 9Reads live Pcm datastream 10Displays live O2 sensor test data 11Evap System test data 12Live sensor data in text mode and graph mode (1996 and newer vehicles) 13Reads, stores and playbacks live sensor data 14Troubleshooter code tips technicians to the root cause of a trouble code faster, saving diagnosis and repair time 15Battery Voltage real time monitoring,better than other expensive item from others brand. 16Builtin Dtc lookup library and display definition. 17Retrieves vehicle information (Vin, Cin and Cvn)