EVAP code P0451

Question

how do i know i have a bad evap canister ?

Answer 1

Hi Apple,

This code is for the fuel tank pressure sensor. This is not usually an issue  with the canister unless it is cracked or broken which should be visible. You can also have a smoke test done on the cars evap system to determing if there is an issue with the canister leaking. Basically though, this code is for the tank pressure sensor which certainly could be a problem.