I use a generic ELM327 v1.5 to read DTC codes from my 2003 Outback. Old Xoom tablet running Android 4.1.2 worked flawlessly. New phone running Android 5.1.1 would not stay connected. Fix is to set Protocol to ISO 9141-2.
Using ScanMaster Lite v2.4. Protocol is set by starting the App.
Tap the y...