2018 ford f-150 xlt super crew cab with 5.0 coyote . over last few weeks have been getting CEL randomly off and on,, i put the scanner on it and had a P0430, looked for leaks in exhaust,did not see any,but the live data on the O2 sensors im not sure of, the P0430 was for bank 2
a pic of the live readings is in this post.not really sure what is the normal reading for the O2's. this is my first truck and learning fast

 

Look at your B2-2 wave form and comparer to B1-2.
Big difference.
It's why code 430 for Bank 2 cat was set.
The Cat efficiency is below spec when system tested. I may be marginal but still too low. The rear sensor tells the results out of the Cat.
This test is done on each startup.
The computer Leans the A/F Ratio so the CATS will heat up in a specified amount of time by 40%. That temp range is tested between 800* and about 1200 * for the 40% rise in order to pass.
If either one fails, the CAT is deemed not to meet emission requirements for removing NOX out of the exhaust.
This is not like the old time Ox Sensor systems you might still read about.
The Sensors are far from even being the same design now with 5 leads.
Good luck.