: 2002 Seville STS Cataylst Issues

04-28-06, 07:03 AM
I can not get my 2002 Seville STS Cataylst to go into the Ready State for the OBDII Testing. The car (http://www.cadillacforums.com/forums/#) has no codes being generated. Car passed when last test was ran with with 75,000. Car now has 81,000 on it. I did a master clear of all the OBDII codes. They have all gone back to the ready state exect for the cataylst. I performed the recommended drive procedure to ready the cataylst and still no luck.

Any Suggestions?

04-28-06, 10:19 AM
Maybe a dead cat?

04-28-06, 02:32 PM
That should generate a code as the downstream O2 sensor would detect a problem.

04-28-06, 03:58 PM
That's what I would think.