Cat wont pass smog

Hello, sounds like the diagnostic monitor for the catalytic converter has not yet set - meaning only that certain criteria for the engine's computer to see that the catalytic converter is working properly have not been met. https://repairpal.com/drive-cycle-issues That's a great starting point to learn more about what to do -- but it'll basically take driving in the exact way the car needs to get it to set. My basic recommendation is: find some open road and set the cruise control to about 57 miles per hour and stay there for a while, maybe 10 miles. That's more simplistic than reasonable, perhaps, but is a good starting point. Most of the time, we are driving much faster, much slower, or at varied speeds, and the engine's computer needs to see some stable data. Alternatively, get a shop near you to help! Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops