how often do charcoal cannisters need to be replaced

Question

what is likelyhood that charcoal canister needs to be replaced vs. regulator valve? Is there a life expectancy of charcoal canisters?

Answer 1

​ The charcoal canister replacement , There no maintance of this item unless it a problem related to the EVAP code, If you have a code relating to a regulator the regulator is replaced, or the whole unit