I have a 97 Civic EX (Canadian) and the check engine light came on. I jumped the ecu so the check engine light would flash a code for me. It came up with a code 67 (Catalyst system efficiency below threshold). What could be the cause for this code?
Also, when I jumped the ecu, the ABS light started blinking codes as well. It gave me codes 16, 18, 54, and 61. How do I find out what these codes mean? Do they mean anything?

Thanks for the help