1st time poster, have tried a search...

Bought 2007 Endeavor in March of this year. Loved until recently. This past Sat Check Engine Light came on with TCL Off light. Took it to Advance Auto to read code, cylinder 4 misfire (of course generic code). Took to my mechanic yesterday and he got the following U codes: U1100, U1101, U1120 (ABD Codes).. U1100, U1104, U1111 (HVAC Module Codes), and said "Multiple Modules Reporting Non-Communication With Powertrain Control Module."

My mechanic advised me to take to dealer for warranty repair under the EPA 8yr/80,000 mandate. I have looked at the EPA fact sheet and to me it should be covered (I have 78,051 miles). My mechanic believes it is a computer failure, which is covered.

Can anyone here help me with these codes and does anyone have experience with that EPA mandate?

Any help will be appreciated. Thanks in advance.