The OBDII Bluetooth car diagnostic scan tool is used to read diagnostic trouble codes both generic and manufacturer-specific and display their meaning. The can test a lot of trouble of the car and display the current sensor data including: engine RPM calculated load value coolant temperature fuel system status vehicle speed short / long term fuel trim intake manifold pressure timing advance intake air temperature air flow rate absolute throttle position oxygen sensor voltages / associated short term fuel trims fuel pressure Many others... The Bluetooth diagnostic scan tool is mini design for convenient to use. Model Mini ELM327 Quantity 1Piece Color Blue + black Material Plastic Compatible Car Models BMW / Audi / Alfa Romeo / Chevrolet / Ford / Honda / Jaguar etc. Function 1Read diagnostic trouble codes both generic and manufacturer-specificand display their meaning (over 3000 generic code definitions in the database). 2 Clear trouble codes and closed MIL. 3 Display current sensor data. 4 Engine RPM 5 calculated load value 6 coolant temperature 7 fuel system status. 8 Vehicle speed 9 Short term fuel trim 10 Long term fuel trim 11 Intake manifold pressure 12 Timing progress 13 Intake air temperature 14 Air flow rate 15 Absolute throttle position 16 Oxygen sensor voltages/associated short term fuel trims 17 Fuel pressure Technical Parameters Supports OBD-II protocol: ISO15765-4 (CAN) ISO14230-4 (KWP2000) ISO9141-2 J1850 VPW J1850 PWM Operating Voltage 12V PackingList 1 x Bluetooth car scan tool 1 x Software CD CD Content: http://m2.img.dxcdn.com/CDDriver/sku.132202.zip