Conquering the PO446 Code Your Guide to Evaporative Emissions System Mastery

The P0446 DTC is telling you that there is an electrical circuit problem with the vent solenoid. That means it could be the solenoid, it's connector, its power ... The code is for a blockage in the ventilation system though, which should be either a clogged filter in the canister, a bad shutoff valve or a ... Make sure the hose is good and clear. Basically, the code sets when the tank pressure sensor sees a vacuum when the purge is opened to manifold ... I had a check engine light with P0446 code and no hiss when opening the gas cap so I started with changing the gas cap - no change The code only means there is something wrong somewhere in the entire vent solenoid circuit, not necessarily with the vent solenoid itself. Unlikely a bad charcoal canister but possible. P0446 would NOT set for a loose gas cap. A loose gas cap would set an EVAP Small Leak code while ... I have an 03 tundra v8 that sets a P0442 & P0446 code every spring. There is a toyota service bulletin for P0446 that says to test and replace the VSV valve. C7 Tech/Performance - Evap code P0446 below 1/4 tank - I have a 2015 z06 and when im below 1/4 tank i got the code P0446. P0446 Evaporative Emission Control System Vent Control malfunction. ... okay I got this same code recently and have not been able to figure ... I just got the P0446 EVAP MISSION CONTROL SYSTEM VENT CIRCUIT MALF error. From reading different posting here, it could be the VSV which I thought is the ...