Outside temp sensor issue

[Sterny666]

Hi everyone My temperature is reading -40 c on my dash! Plugged in the diagnostic reader and it's come up with fault code ac6a outside temp sensor so naturally I thought the temp sensor located at the front bumper was faulty and bought a new one and promptly replaced it but it's still reading -40c not sure where to go from here? Also I've noticed the a/c is barely blowing any cold air in even on full whack could this be to do with the low temp reading? Not sure if they are linked or not? Any help would be much appreciated

[BimmerBreaker]

Check the wiring and fuses

A/C operation depends largely on exterior temp, if car thinks its -40 it wont run properly