Xtool U581 Live Data CANBUS OBD2 Car Diagnostic Scanner Reset Check Engine Light Help you find out the trouble issue of your vehicles. Reads and clears generic and manufacturer specific Diagnostic Trouble Codes (DTCs) Works on all 1996 and newer cars & light trucks that are OBD II compliant (including the VPW, PWM, ISO, KWP 2000 and CAN protocols) Once you plug the cable into the tool & into the vehicle's connector, the car scan tool will automatically turn on Function: Test car I / M (vehicle maintenance) reads the status Support system: Misfire, Fuel System, Comprehensive components (ccm), EGR System, Oxygen sensor Catalyst, Evaporative, O2 Sensor heater. Secondary air, Heated Catalyst, A/C System etc..