how do i check the codes

everyone tells me to check the codes but i dont know how. i have a 89 hatch with a b16a.

Do you have a CEL(check engine light) on in your gauge cluster? If you do go to the passangers side of the car and pull up the carpet. You will see a goldish copperish color metal plate. In the middle there is a hole in it. Turn your key to ACC. Then count the blinks. If there is more than one it will have a pause between them, and then the codes will repeat! Then check the FAQ at the top of the forum and the code corresponds to a certain error/problem!

turn on the eignition to the on position and then pull up your rug on the passenger side and there should be a light on the front and if u get the codes u can tell whats wron by how many times the light flashes.

do u know how many times its blinking and ifso who put ur engine in and does it throw check engine lite does it drive good could u give some more symptoms beside people say check ur codes?

well i really cant understand your english. but when you "check your code" those little blinking lights mean a PROBLEM. Each "code" says somethings wrong. And then you go to the part on the engine and fix it.

For Example: Lets say i have a code 4, 4 flashes! Its the Crank angle sensor. Go to the car and find the sensor, located in disributor and go from there. see if the sensors bad or wiring!

my car has minor idling problems from time to time and the check engine light comes on when i leave it in 3 4 or 5th gear and let the rpms wind down to low rpms with out pressing the clutch