This application requires a reliable OBD adapter. Cheap adapters may not work or functionality may be limited. K+D-Can cable of the following Bluetooth adapters are recommended: UniCarScan UCSI-2000: Choose setting: D-Can mode: MODE2. Carista. Veepeak OBDCheck BLE. Application allows to read and erase fault codes in BMW 1/3/5 E/F series and similar models.