P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
P0453 Evaporative Emission Control System Pressure Sensor High Input
They do have a little to do with your fuel pump. You may have difficulty filling your fuel tank. These codes deal with the evaporative emission system. This system is to trap all gas fumes and vapors from the fuel lines, holds them in the charcoal canister and burn them off while the engine is running. There is a purge solenoid that control when and how much fumes to burned off, and from the codes, the solenoid is defective.
It looks like this
Thursday, December 18th, 2008 AT 7:58 PM