Fuel System Leak Troubleshooting Guide (P0446)

in this video I'm gonna share with you how to diagnose and fix a P0446 Trouble Code On a GMC Yukon! Evap System Testing! This code can be triggered by an actual vent valve malfunction but can also be triggered by a leaky gas cap. By leaky, I mean the seal is ... You might not have a leak, but rather a constriction in the system. It could be a defective vent solenoid, a plugged canister, etc. Read this ... The code P0446 is set when the engine computer recognizes a fault or restriction at the vent control part of the Evaporative emission control system (EVAP). P0446 indicates an Evaporative Emission Control (EVAP) system vent control circuit malfunction. Typically, this indicates a faulty vent valve. The code po446 is "Evaporative Emission Control System Vent Control Circuit Malfunction" Feel free to do some more forum searches to see exactly what to look ... P0446 is a diagnostic trouble code (DTC) for "Evaporative Emission Control System Vent Control Circuit Malfunction". This can happen for multiple reasons. Corroded wire causing a check engine light with code P0446 and hard refueling. Code P0446 means the car's computer has detected a problem with the EVAP system vent valve. The EVAP system is primarily composed of the gas tank, gas cap, ... Evaporative Emission System Malfunction P0446: Evaporative Emission Control System Ventilation Control Circuit Malfunction - Auto 24 cards ...