2002 Seville STS Cataylst Issues
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Northstar Engines and System Technical Discussion Discussion, 2002 Seville STS Cataylst Issues in Cadillac Engine Technical Discussion; I can not get my 2002 Seville STS Cataylst to go into the Ready State for the OBDII Testing. The ...
  1. #1
    aplusdj1 is offline Cadillac Owners Member
    Automobile(s): 2002 Seville STS
    Join Date
    Apr 2006
    Location
    Georgia
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    2002 Seville STS Cataylst Issues

    I can not get my 2002 Seville STS Cataylst to go into the Ready State for the OBDII Testing. The car 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?

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  3. #2
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Re: 2002 Seville STS Cataylst Issues

    Maybe a dead cat?

  4. #3
    aplusdj1 is offline Cadillac Owners Member
    Automobile(s): 2002 Seville STS
    Join Date
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    Location
    Georgia
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    33

    Re: 2002 Seville STS Cataylst Issues

    That should generate a code as the downstream O2 sensor would detect a problem.

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Woodstock Ill.
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    Re: 2002 Seville STS Cataylst Issues

    That's what I would think.

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