Ok so I finished the dynomax cat back and Started the car [B]it sounded great so I let it run till it got warm and so the coolent would cerculate around a bit. So I got out and looking at the car. Still need to make the tips point out level. So I got back in and the check engine light was on. So my question what can make the check engine light come on besides the alternator, coolent and the oil pressure sensor becuase Im goingto replace all the sensors.

 

You have to check your codes using the thing under the dash.. read the FAQ about how to flash your codes...