KONNWEI KW880 Functions: OBD II diagnostic functions: 1. Works on all (OBDII & CAN) vehicles- domestic and import 2. Features the unique patented One-Click Readiness Key for quick State Emissions readiness check and drive cycle verification. 3. Bright color coded LEDs indicators and built-in speaker provide both visual and audible tone for readiness verification 4. Retrieves generic (P0, P2, P3 and U0), manufacturer specific (P1, P3 and U1) codes and pending codes 5. Easily determines the cause of the Check Engine Light(MIL) 6. Turns off Check Engine Light (MIL), clears codes and resets monitors 7. Enhanced OBD2 Mode 6 On Board Monitoring Test Results for Specific Monitored Systems. 8. Views freeze frame data 9. Displays monitor and I/M readiness status (emissions) 10. Reads live PCM datastream 11. Displays live O2 sensor test data 12. EVAP System test data 13. Live sensor data in text mode and graph mode (1996 and newer vehicles) 14. Reads, stores and playbacks live sensor data