Kafelatte

i have a 00 honda civic dx hatch and i recently swapped out my b18b which i had in there and swap the sohc back in. rewired everything back to the way it was. thought it would be a piece of cake but now it's throwing code 1, 61, 67. it has something to do with the primary o2 and the cat. the o2 and cat are good. i replaced it with a working one so i know for sure it's not bad. could it be my wiring? i really need to figure this out so i can smog it because my registeration is past due. any help will greatly be appreciated.