Usually either fuel cap not installed properly or a problem in the emission control system - have vehicle scanned to determine problem
The check engine light comes on when the main computer senses an error in something electronic such as a bad sensor or wire. The easiest way to see what it is is to go to autozone or a dealership or someone with a scan tool and have them read the codes from the vehicle. Autozone does it for free but a dealership will charge for it.
check fuses
On the Passengers side rear of the engine compartment you will see a red oil dipstick. That's where you refill and check the Transmmision oil.
On a 2002 Ford Expedition : The " check engine " light is the " SERVICE ENGINE SOON " light just to the left of the fuel gauge
Auto Zone will check engine codes for FREE. I thing you may have a bad coil park or plug.
Check fuses , or bulbs in radio burn out.
Ford Explorer headliner replacement instructions check related link below.
Auto Zone will check your engine light for free... Write down the codes and go from there.
Auto Zone will check your engine codes for FREE. Then go from there.
Check engine light is out
Check owner's manual. If you don't have one copy and paste link below; www.fleet.ford.com/maintenance/owners_manuals
Auto Zone will check your engine light for FREE. They will also tell you whats wrong.