P0446 Evaporative Emission Control System Vent Control Circuit Malfunction. This is s CIRCUIT malfunction, so test for power, ground and then check the resistance on the solenoid coil. If you see power and ground in the connector, it's usually a bad vent valve. http://ricksfreeautorepairadvice.com/p0456-p0455-p0457-ford
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P0446 Evaporative Emission Control System Vent Control Circuit Malfunction. This is s CIRCUIT malfunction, so test for power, ground and then check the resistance on the solenoid coil. If you see power and ground in the connector, it's usually a bad vent valve.
http://ricksfreeautorepairadvice.com/p0456-p0455-p0457-ford