DIAGOBD helps to find problems from your car. It displays current values from several sensors, also minimum and maximum values are saved when appropriate.
This app works with ELM327 OBD2 Bluetooth adapter (or clone) which is connected to the car.
Used protocol is by default Automatic selection. If you have connection problems, protocol can be changed via menu. If you do not know which protocol is supported try all protocols one by one.
You can also use app INFOOBD, it displays which protocol(s) your car supports.