P0449 Evaporative Emission Control System Vent Valve

Evaporative emission control system vent valve/solenoid circuit malfunction. what does that mean? this code is a generic powertrain code. it is considered generic.Where and what should i be looking for to fix this code? (p0449 evaporative emission control system vent valve/solenoid circuit malfunction). i have a 2000 buick.The engine control module (ecm) has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.. The evaporative emission system (evap) canister vent control valve is located on the evap canister and is used to seal the canister vent. this solenoid (the evap. The engine control module (ecm) has determined that a malfunction exists in the electrical circuit for the vent valve/solenoid in the evaporative emission control system.. Evaporative emission control system vent valve/solenoid circuit shorted. what does that mean? this code is a generic powertrain code. it is considered generic because. Dtc p0446 evaporative emission (evap) vent system performance refer to evap control system overview . system description this dtc tests the evaporative emission (evap. Dtc p0449 evaporative emission (evap) vent solenoid control circuit. circuit description. an ignition voltage is supplied directly to the evap vent valve relay coil..P0449 evaporative emission [evap] vent solenoid problems and solutions.