Z28 will NOT pass Emissions. HELP PLEASE
 

I have a 2002 camaro z28 that shows the code po430 catalyst Efficiency bank 2. So I replaced the PCV valve, Both 02 sensors, and the direct fit catalytic converter but when I recent the code it came back on for the same code after 41 miles. Do yall have any suggestions. I really need a car to drive to work!!?

When you say "both O2 sensors", you do you mean the pre-cat and post-cat sensors only on bank 2 right? Do you have an exhaust leak in-line between the O2 sensors? That could throw a 430 code too.

I replaced the pre and after only on bank 2. I do not have a leak. I made sure that I didnt have a leak when I tightened everything down and crunk it up. Do you have any other suggestions. I mean ill check again to make sure I dont have a leak

check your fuses. check for power to the 02 heaters.