【Multi-Functions】Practical Multi-Functions OBD2 Scanner code reader features built-in OBD2 DTC code lookup library, which help you to determine the cause of the engine light. Read Code, Erase Code, View Freeze Frame, I/M Readiness, Reading Vehicle Information, Data Flow, Live Data Curve, O2 Sensor Test, EVAP System Test, Read Battery Voltage, etc.(Note: It cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.)