Engine ticking

The code and noise can be related. If the catalytic converter has fallen apart inside it will make a rattling sounds and make the code. Here is a guide to help you confirm the failure:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

but is could be the engine too here is a guide to help

https://www.2carpros.com/articles/comprehensive-guide-to-identify-and-fix-ticking-and-tapping-noises-in-engines

Can you please shoot a quick video with your phone so I can hear the noise? that way I can tell for sure what's going on.. You can upload it here with your response.