EVAP/Charcoal Canister

An evaporative emissions (EVAP) control canister, also known as a charcoal or carbon canister, is used in the emission system to store hydrocarbons (e.g., fuel vapors from the fuel tank). When the engine is running the vapors are drawn into the intake air to be burned in the combustion chamber. On older vehicles it looks like a coffee can and is located under the hood. On newer vehicles it is located by the fuel tank.