Trouble code P0446 means: Evaporative Emission System Vent Control Circuit
Trouble code P0446 means:Evaporative emission control system vent control circuit malfunction
Trouble code P0446 means: EVAP Vent System Performance
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0446 means: Evaporative Emission System Vent Control Circuit
Trouble code P0446 means:Evaporative emission control system vent control circuit malfunction
Trouble code P0446 means:Evaporative emission control system vent control circuit malfunction
Trouble code P0446 means:Evaporative emission control system vent control circuit malfunction
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
Trouble code P0446 means:Evaporative emission control system vent control circuit malfunction
Evaporative Emission Control System Vent Control Circuit Malfunction
The light comes on when the computer senses a problem. You have to check what code is stored in the computer and go from there. Some auto parts stores will check the code free for you.