John Kyle Stallings

My Edge started missing on way to work. Managed to get it home and it died and wont restart. Had a Ford mechanic come over to check code and said CHT failure and wont allow car to fire. I have 160,000 on my 2008 Edge and this is the 1st issue with power train. I dont see much on this subject at all. Has anyone changed this and would this stop car from firing?