Man TGS truck - location a sensor - heat problem

I have a Man TGS truck that has a heat problem, I checked it with a OBD device and gave me this malfunction "outside temperature sensor" with the code 5556.
I want to know the location of this sensor

The sensor is under the hood on the front right side of the cab.

Abdullah what temperature?
The external one that displays on the dashboard or the one to control the air conditioning? Because this sensor is located in the inlet to the cabin filter ?