I have a 2012 F150 with the 5L.
Recently the high speed fan just comes on randomly (very loud).
It sometimes comes on after seconds of first starting it cold and/or when it’s warm.

I’ve done a quick search and although it seems common on both 5L and Eco I haven’t found the reason why and how it’s fixed.
Some have said it’s the AC pressure being to high?
I would think it’s a sensor reading a false temp and engaging the high speed fan.

Anyone else have this problem? Or know the fix?

Thanks.