Cat reads not complete

Question

I had my service engine light on. Replace air flow mas sensor, both O2 senors, and my cat. All were bad !  Engine light off now. Car runs better. Now cant smog it cuz cat reads not complete on smog monitor. I have drivin my 2002 Cady STS 462 miles and still reads cat not complete. No codes show up when plugged to a code reader.  What can I do to reset the cat code ?

Answer 1

Did you used a factory or factory compatible catalytic converter? some aftermarket cats won't complete the test.