It's just a canister with activated charcoal in it. You can substitute one from another vehicle if you must get through emissions inspection. Maybe not what you want to see, but it will work. After passing test, then remove.
But I echo what TwoShelbys said: Since its such a simple part with no moving parts, it rarely fails unless physically damaged. IF it is physically damaged, and not squished, you can seal up the cracks with epoxy or some such. One other problem that can occur is if the gas tank was so overfilled at some point that liquid gasoline flooded the canister. It takes a long time to dry our after that. Maybe bake it in an oven at 190 degrees for a few hours. But I don't think that would cause it throw a code. If Rich or Kendall or one of you knows better, please jump in.