1. Read the error diagnosis code-general and manufacturer-specific, and display their meaning (the database has more than 3000 common code definitions) 2. Clear the error code and turn off the ("Check Engine" indicator) Display current sensor data, including: Engine speed per minute (RPM) Calculated load value Coolant temperature Fuel system status Speed Throttle absolute position With short-term fuel status Associated oxygen detection voltage Fuel system status Fuel pressure Fuel consumption monitoring Data graph display and logging Freeze frame data Continuous and discontinuous oxygen detection results Support 5 languages Communication protocol: SAE J1850 PWM(41.6 Kbaud) SAE J1850 VPM(10.4 Kbaud) ISO 9141-2 (5 baud init, 10.4 Kbaud) ISO 14230-4 KWP (5 baud init, 10.4 Kbaud) ISO 14230-4 KWP (fast init, 10.4 Kbaud) ISO 14230-4 CAN (11bit ID, 500 Kbaud) ISO 14230-4 CAN (29bit ID, 500 Kbaud) ISO 14230-4 CAN (11bit ID, 250 Kbaud) ISO 14230-4 CAN (29bit ID, 250 Kbaud Specifications: Model: V309 Working voltage: 9-16v Working current: 80mA Operating environment: - 30-70°C Storage temperature: - 30-80°C Material: plastic colour: Red Package Contents: 1 x Car 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.