how to turn off check engine light on 1999 Toyota Corolla

my car has 139,000 miles the check engine light came on how do i turn it off.

Asked by for the 1999 Toyota Corolla
The problem which caused the check engine light to come on must be diagnosed and repaired on your 1999 Toyota Corolla in order to turn the light off and keep it off. Please see the RepairPal article on the check engine light for more information, here is the link -
1 more answer
You can use scanner,to turn off the light. (OBD-2 ) However,if there is a code,or problem,the light will come back on. Have you had the car scanned for TROUBLE CODES???