08 F150 5.4 King Ranch 4x4. the truck was wrecked not long ago and now the gas cap indicator on the dash is always on. what are some reasons this could happen? i checked alldata with no luck. maybe an EVAP hose thats loose? im not used to working on these newer trucks. any help would be greatly appreciated. thanks guys!

 

Little vacuum hose that hooks to a sensor, on top of the fuel tank. Wire's not connected?