beanstalk805@hotmail.com Posted July 4, 2007 Share Posted July 4, 2007 i'm getting the obd code 67- Which is catalyst system efficiency below threshold malfunctioning or defective catalyst system. What could have caused this problem to come about, and how can i fix it? Link to comment Share on other sites More sharing options...
cranny Posted July 4, 2007 Share Posted July 4, 2007 could be your cat getting plugged up or simply not doing its job as well anymore. could be your secondary o2 sensor possibly. hard to say. Link to comment Share on other sites More sharing options...
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