Climate control aspirator fan. This very small electric fan sucks air from it's input which is behind a small plastic grill in the overhead lights / sunroof module and delivers it to the climate control temperature sensor. There is a tube that connects the fan to the overhead location.

Your car doesn't have a passenger airbag, so access to this part is simply removal of the glove box liner. Then it is easy to reach in and feel it. Replacing it might require removal of lower kick panel.

Probably noisy due to the freezing temperature.

Steve