OBD2 Bluetooth Scanner & Diagnostic tool is designed to scan & find fault codes of your car engine. This OBD2 fault finder will let you find engine errors on the go and save you allot of money from the market. OBD2 bluetooth scanner tool can work with any ELM327 device which can be easily available in market. Once you have the Device you are all set to diagnose for any error codes. App Features Scan all engine for possible troubles and faults. Diagnose any malfunctioning part so it would easy for you to replace or repair the damage unit. Real Time Engine Data for multiple testings including ECU Test, Oxygen Sensor Test, RPM Test Etc. Clear MIL or Clear Error LOG feature. Can Clear Engine Fault Dashboard sign How it Works The use of OBD2 Smart Scanner is very Easy all you need to have the OBD2 Scanner Bluetooth Device for example ELM 327. Install the app . Open OBD2 scanner app . Tap the Bluetooth icon and scan for available devices. . Once you paired your mobile with ELM 327 device. . Then Click on Scan to find any error codes. . Once you finish diagnosing then Click on Clear MIL to Remove all trouble codes from dashboard.