faling smog on 2003 Hyundai Tiburon

my car has faild smog because my computer is not testing one of my o2 censors and one of my caddie what would cause my computer to no test these

Asked by for the 2003 Hyundai Tiburon
you may not be driving correctly to run those monitors or you have a problem in those systems. take it to a shop and let them tell you the issue.