1. Read the error and clear the diagnostic code 2. determine the cause of the check engine light 3. Oxygen sensor test 4. EVAP test 5. Freeze frame data Working voltage: 12V Working current: 51mA Standby current: 50mA Operating environment: -30~70 Storage temperature: -30~70 supporting agreement 1. SAE J1850 PWM (41.6Kbaud) 2. SAE J1850 VPW (10.4Kbaud) 3. ISO9141-2(5 baud init, 10.4Kbaud) 4. ISO14230-4 KWP (5 baud init, 10.4 Kbaud) 5. ISO14230-4 KWP (fast init, 10.4 Kbaud) 6. ISO15765-4 CAN (11bit ID, 500 Kbaud) 7. ISO15765-4 CAN (29bit ID, 500 Kbaud) 8. ISO15765-4 CAN (11bit ID, 250 Kbaud) 9. ISO15765-4 CAN (29bit ID, 250 Kbaud) Material: ABS colour: black Package Contents: 1 x Automobile Fault Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.