2000 4.6L - ambient air temperature sensor off by several degrees

[Petesexpy]

Lately, I noticed that the outside air reading on my display was 4F to 7F lower than the actual air temp. Does it mean I need new temp sensor, or can I just recalibrate (and how)? I think it is sensor, because the difference changes as the temp changes.
Any thoughts?
Also, how easy to replace the temp sensor? I believe it is under the front bumper.

 

[Yupster Dog]

Also, how easy to replace the temp sensor?

It is behind the grill, in front of the radiator. (You can get at it from the top)

Open hood, first plastic piece removal,(on top of the radiator and grill)

and it's right there. (usually more towards the drivers side)
Easy access

 

[Petesexpy]

Thanks!
Do you believe it's the sensor that's bad?

 

[Yupster Dog]

Thanks!
Do you believe it's the sensor that's bad?

When I had to change mine it was wildly off. I do not remember if it was a little off first.

 

[Petesexpy]

When I had to change mine it was wildly off. I do not remember if it was a little off first.

Thanks! I'll post update.

 

[99WhiteC5Coupe]

Thanks! I'll post update.

When you change the ambient air sensor, read your owner’s manual about its operation.

The display may not show the current ambient air temperature when the vehicle is first started, and may have to be driven several miles to display the correct temperature.