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
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 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.
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.
The 2002 Lincoln Navigator has a V8 engine.
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.