I did not pass emissions because the check engine light wont come on. What to do on 2004 Cadillac Seville SLS

How do I repair this problem

Asked by for the 2004 Cadillac Seville SLS
1 answer
Do you have a way to erase the code if it comes on? If so create a code to see if it works, for instance unplug the MAF sensor and start the car. If the light comes on then it works. If not, it needs to be diagnosed to see if the bulb or circuit to it is bad. Make sure you plug the MAF back in.