Customer: Hi, I have a P code, P0446 Evaporative Emission System Vent Control Circuit. What does it mean? How can I resolve this issue? What do I need? Can someone assist me, …

Oct 13, 2016 · So I've read almost all the forums about this code. Two indie Toyota Mechanics have told me not to worry about it... just drive it they said, or you could easily throw a $1,000 at …

Engine light on. Code PO446, Evap system vent control fault. Solid, after having muffler work done. I smells like - Answered by a verified Toyota Mechanic

Dec 5, 2024 · Po446 code showed up, 1) Air intake horse had a hole so i replaced it. Light came after 40 miles. 2) Changed the vacuum switching purge valve solenoid. (Please check the …

Feb 23, 2021 · There is a toyota tsb (#1055) for those 2 fault codes (PO440- Evap Control System PO446- Evap Emission Control), common problem is the by-pass vsv on the canister is sticky, …

2004 chevy silverado, code P0446: (EVAP) vent control circuit malfunction. Recently had code P0442, found and replaced a

Dec 11, 2013 · These codes are coming from my wife's '03 Highlander V6 (92K). I'm sure these codes are interrelated, but is it common for the computer to set all three codes together? Note: …

Jan 23, 2024 · Update: Solved, see post #36. I need some help with smoke testing the evap system on Toyota Corolla 2003, no scan tools at the moment. I had done a basic smoke test …

May 15, 2014 · Most Common PO401 and PO446 Cause Jump to Latest 12K views 15 replies 5 participants last post by motorbreath777 May 19, 2014 numberforty1 Discussion starter

Aug 17, 2018 · This means an issue with EVAP system, BUT doesn't mean any parts are bad. Just that vacuum and pressure in certain lines are not what they should be. Happened on my …