Chosen Solution
I have a 2012 Jeep Grand Cherokee. I’m getting P0480 CEL but my fan is working on over drive and overcooling my vehicle. I tried switching the relay in the TIPM(fuse box) and still getting the same code.
@darrylmercer45 you are dealing with a model that is plagued with a bad TIPM. This could be related to that. Something as simple as corrosion of the TIPM, corroded wires/connector as well as a failed TIPM could be causing this.
