Guys i have had my AT 04 coupe for 4000 miles..
and the check engine light has turned on twice..
first time it was some valve

 

Did you recently full up your gas tank? Maybe gas cap isnt screwed all the way on. That can cause the check engine light to come on.

2004 G35 Coupe 6MT-BS/BLK-Full Aero-Navi (on order)
1997 BMW 540ia M5 Bumper with Angle Eyes

 

What kind of gas are you using? Is it the regular 93 octane or is it that ethanol stuff.

Also, you're not using any fuel additives are you?

 

im using 93 octane from amaco....
premium only....

its not the gas cap this is bs i been reving my car alot but what does it matter..

my baby is resting at a friends house tonight i didnt wanna drive drunk,,,

 

The check engine light should save a file in your computer chip which the dealership can retreive at anytime. Take it in, they will figure it out...