The check engine light comes on and you're left guessing what's wrong. This OBD2 Bluetooth module plugs into your vehicle's OBD-II port and pairs wirelessly with your Android device, giving you real-time engine data, fault codes and performance stats. It suits DIY diagnostics, tuning enthusiasts and anyone wanting better insight into their vehicle's health. This works with Android devices only. Software isn't included. What's in the Box 1 x OBD2 Scan Gauge Tool Key Features Bluetooth connectivity: plugs into your OBD-II port and pairs with Android devices over Bluetooth Read and clear fault codes: diagnose check engine lights and clear trouble codes depending on vehicle type Live sensor data: monitor real-time vehicle stats and system health Wide compatibility: supports all OBD-II protocols with over 3000 generic code definitions Plug and play: no wiring or tools required for setup Live Data Monitoring Engine RPM Vehicle speed Coolant temperature Throttle position Fuel system status Intake air and manifold pressure Timing advance Air flow rate O2 sensor voltage and fuel trim Fuel pressure and load values Important Notes Android devices only: not compatible with iOS Software or app not included: you'll need to download a third-party app from the Google Play Store Functionality may vary depending on your vehicle's make and model