sensor of outside temperature working bad on 2005 Ford Crown Victoria

the outside temperature panel show the wrong numbers, when is 73 degree outside, inside the panel shows 77 degree

Asked by for the 2005 Ford Crown Victoria
best to check the outside temp reading when the car is in the shade because when its 73 outside and your car is outside in the sun the heat will make the outside of the vehicle hot and show a higher reading than normal