I have a 2007 sportscoach with a C7 Cat motor and the last 2 days I have been having the check engine light come on for about 2 or 3 minutes then it goes off and does not come back on. Any Ideas?
If Freightliner chassis, check coolant level/coolant sensor. If OK, change fuel filters. If still on, pull codes/go to a Caterpillar dealer to pull codes.