if its a cop it should throw a code. if it spits a plug (which i think they fixed in your year model) it wont have a code. you could have a blown bulb behind your CEL light, thats whats up in mine
My truck will not be built ford tough with Chevy stuff. My friend works at a ford dealer and im going to ask if he is friends with any of the techs. If so i will ask if they are willing to make a housecall to diagnose the problem before i start to spend money on parts that may not solve the problem.