There is/was a bulletin on this problem and the early SI pcm also had the fault. I do beleive MoPar will reflash the PCM for you if you send it to them or the company that produces the pcm. Do a search on over heatin and you might find the bulletin. Good luck!
This might help?
http://www.ptcruiserlinks.com/forum/...ms=cooling,fan
I wouldn't let the dealership flash the SI PCM!