2002 2DR ford explorer. Runs & sounds great. Why is check engine light on? on 2002 Ford Explorer Sport Trac

It has about 90,000 miles.

2 answers 2 comments
The computer has recognized an emissions fault; Have the truck scanned for the code.
Thank you for your response. I will take it in this weekend : )
need to start by scanning it. most common part fail is dpfe sensor,but make sure and get it scanned first.
Thank you for your response and advise. I will take it in this weekend : )