2003 Chrysler Town and country.van 3.8 auto cooling fan relay switch
 

Yes I found out that the check engine light could not be reset when the errorcode comes up P 0400 or something and when you Google it it says it's the engine cooling fans . You can check the fans with wires from battery. Simple fix is pop open hood take 6 Philips screws out of grill top remove grill about 5 minutes then reach inn with sheetrock screw use a drill and drill out aluminum rivet disconnect connector put 60 dollar replacement relay in same place use a screw to secure it it is inside behind grill on drivers side front of radiator ...then you have to disconnect battery cables reset computer and you should be good