OBD2 Bluetooth Scanner for IOS & Android Autohil AX4 is an easy to use OBD2 Bluetooth scan tool that can help you connect to your vehicle's data using your iOS, Android and Windows smart devices. Compatible with most OBD2 Apps on Apple App Store and Google Play Store which allows greater flexibility and choices for you on how to use your OBD diagnostic scanner. Diagnose engine trouble codes and know why CHECK ENGINE light is on and clear it. Customise dashboards to monitor engine, temperature, pressure and other performance gauges Real-time speedometer & fuel economy data Log engine, trip and fuel data! Plus much more! Real-Time Performance Gauges On Your Smartphone Pair your AX4 OBD2 Bluetooth Scan Tool to your preferred performance App and see what your car is doing in real-time: get OBD2 fault codes, car performance gauges, live sensor data and more! Real-time performance data include: Engine RPM Calculated Load Value Coolant Temperature Fuel System Status Vehicle Speed Short Term Fuel Trims Long Term Fuel Trims Trim Intake Manifold Pressure Timing Advance Air Intake Temperature Air Flow Rate (MAF) Absolute Throttle Position Oxygen Sensor Voltages ECU Voltage Fuel System status Fuel Pressure Fuel Consumption Trip data Boost OBD Type Ambient Air Temperature Fuel Level Evaporative purge Intake pressure (MAP) Engine Timing Engine Load and More *OBDII sensor gauges are vehicle dependent. Diagnose Engine Trouble Codes DTCs Get engine trouble code & its' meaning right on your smartphone’s screen. Know why your engine light is on and turn it off. [Reads & Clear DTCs]: Read Engine diagnostic trouble codes DTC and provide both the code and its' meaning and clear them [Engine Live Data] : Customise and monitor real-time engine parameters. [Freeze Frame Data]: Recorded system parameters values at the time when engine malfunction first occurred [Readiness test] : Test and check status of engine emission control systems [VIN]: Read vehicle info such as Vehicle Identification Number VIN, Calibration IDs CALID and Calibration Verification Number CVN *Most Apps can only diagnose (read & clear) engine fault codes. Easy To Setup OBD2 Bluetooth Connection Plug the bluetooth scan tool into your vehicle’s OBD-II port and pair with an OBD2 App of your choice. Recommended Apps for Android : TORQUE & TORQUE PRO, Car Scanner, ELM OBD Recommended Apps for iOS : Car Scanner, DashCommand, ELM OBD Apps sold separately.