check engine light on on 2001 Ford Explorer Sport Trac

My chech engine light is on steady.Engine is running fine.

Asked by for the 2001 Ford Explorer Sport Trac
This could be due to any number of problems that your engine computer is detecting within your emission control system. RepairPal has an article that talks about what could be causing it and what to do next: http://repairpal.com/check-engine-light
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