One problem related to check engine light on has been reported for the 2003 Ford Excursion. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Ford Excursion based on all problems reported for the 2003 Excursion.
: the contact stated while driving 60 mph on normal road conditions, the check engine light illuminated intermittently and then remained illuminated. The illuminated light indicated the cam shaft was off center which created undesirable emissions. The epa was contacted who declared it should be under warranty for 5 years or 50,000 miles however the manufacturer refused repair the defect without a cost.