Sounds like the codes were cleared at some point that's why the monitors wernt ready. When the battery dies or is replaced or codes are cleared. The monitors get cleared and have to be reset by driving/operating under certain conditions. Sounds like you have a bad cat from the code you have. As long as there are no exhaust leaks then more then likely you have a bad cat.
Wednesday, July 27th, 2016 AT 6:08 PM