Engine Light Came on / with Idiot buzzer now sounding different

[cykobboy]

its my S14 stock ka with aftermarket exhaust ( apexi ) i am thinking o2 sensor right off the first guess but why do i got a change in the buzzer sound. This is the sound u get from leaving the lights on or leaving ur keys in the car btw.

ty for any help provided in advance.

[keytops]

HAHA funny ass first post. CEL (check engine light) has nothing to do with that annoying beeper. What you need to do is stick your head down where the pedals are laying on your back. Look for a yellow box with a hole in it, should be about dead center near the brake pedal bracket about where your knees would be. Thats the stupid noise maker, either clean it, or unplug it.

[cykobboy]

ya i got that but the light at the same time puzzles me... and ya sorry about the first post thing i do alot of post reading and usually find it.