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What preceded the problem? Is it the first symptom, or was other work done on the car, and for what problem, and did it solve that problem?
New radiators come with plastic caps on the hose necks. Head bypass hoses, steam bleeds, etc, can get mixed up and really mess with you after work not related to a cooling problem.
Do you believe it's really up to 220? Will it overheat at highway speeds? Was it showing overheating symptoms that caused work to be done, but the gauge never showed that it was hot? Or did you notice that it was hot on your scan tool, without seeing it overheat?
220 is not obscenely hot for a car that new, many cars won't cycle fans until the coolant is hotter than 220, and there may not be an exact number. I saw a late 90's GM car with a gauge that would get to 3/4ths hot before the fan would cycle - but the manual said "about 222", and sure enough, 223 or 224 and it would cycle - there was nothing appreciably wrong with the car, and not much reason to troubleshoot further.
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