Unraveling the Enigma of P0446 A Comprehensive Guide

P0446 Evaporative Emission Control System Vent Control malfunction. ... okay I got this same code recently and have not been able to figure ... 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. How to Fix P0446 Code: Easy DIY Guide Description: Are you dealing with a P0446 trouble code? This code indicates an issue with the ... When P0446 is triggered, the ECM has detected a short in the circuitry to activate the vent control valve, or the EVAP system failed to maintain the vacuum. The manual says it's "vent system performance" and that the system will throw a code if a leak is detected. Then later it says the canister or hoses are the ... What does code P0446 mean? When code P0446 shows up on a diagnostic scan of your vehicle, a technician knows that there is something going wrong with your EVAP ... What is a P0446 Code? Better yet, what the heck is a Evaporative Emission System Vent Control Circuit? Well I ran into this problem with my ... P0446 EVAP Vent Problem. Getting The Parts Store To Give You Codes Is Not Fixing The Issue.. 36K views · 2 years ago #automotiverepair ... My engine light came on for this problem (P0446) Evaporative Emission System Vent Control Circuit... additionally i cant seem to pump more that about $.35 worth ... Our 2001 Toyota Sienna failed it's Massachusetts emissions test this year, the problem was with the evaporative emissions control system (code # ...