Quote Originally Posted by benner View Post
Blinking SES light means a catalyst damaging fault is occurring. You can really screw things up with that. Get it to a dealership or other mechanic and have it fixed.
Yes, things can get very damaged if you don't fix the problem asap. I had the blinking light happen to me just yesterday. Tuned out a spark plug wire got knocked off. Had I no checked under the hood & looked around serious damage could have occured.