There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
Have Auto Parts Store reset it , will do this for free.
Not likely, but possible.
acura cl 2002 check engine light
On a 2002 Ford Expedition : The " check engine " light is the " SERVICE ENGINE SOON " light just to the left of the fuel gauge
If the check engine light it on a 2002 Hyundai Accent on one of the sensors is malfunctioning. The computer is acknowledging this and alerting the driver that there is a problem in the engine.
A blinking check engine light means an engine cylinder misfire has been detected . You can drive it in for repair , just avoid any rapid acceleration or deceleration because you can damage the catalytic converter
If the check engine light is flashing that means an engine cylinder misfire has been detected
Hard to tell from here if the engine has a shutter or the transmission has a shutter but if the check engine light is on you could start with having the ECM scanned for codes.
If the check engine light is flashing that means an engine cylinder misfire has been detected
You need a scan tool to properly reset the check engine light.
The check engine light on a 2002 Ford Focus can be reset by disconnecting the battery for 1 to 2 minutes. This resets the vehicle's computer and clears the light.
The 2002 Lincoln Navigator has a V8 engine.