P2400 Code: Evaporative Emission System Leak Detection Pump ControlSome Toyota and Dodge vehicles have a vacuum-operated leak detection pump to help diagnose the EVAP control system. The pump comes with a vent valve that’s normally open to let fresh air pass through before it reaches the charcoal canister. The charcoal canister can be found under the hood or
5 Signs You’re Due for a Charcoal Canister ReplacementWhenever you refuel your vehicle, the fuel tank is vented to the charcoal canister. The canister then captures any gas fumes to prevent toxic vapors from escaping into the atmosphere.