I have a 2003 Honda Civic and when I start the car the check engine light blinks for probably less than 30 seconds. Does this mean the light is going out and needs to be replaced, or does this mean something might be wrong with my car. I don't have the user manuel. Any advice welcomed. Thanks!

 

I'm not familiar with 2003 dash board but it sounds like "Main. Required" light.
Are you chure it is a"Check Engine" light?

 

how many times does it blink?

 

You're right, it is the Maint. Required light that blinks.

 

I blinks like 15-20 times

 

Reset it, it just a remainder.
Push reset on odometer, hold it and turn ignition key on. Wait about 10 sec.