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Code po446 after fill up hard to start, fells of gas

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Code PO446 on evac system. what does it mean. engine light remains on 2004 montero sport all wheel drive with 4x4


It's the EVAP system. Code is for an open or short to ground in the gas tank vent valve. Pin hole in tank might cause a P0442 for a small EVAP leak, if the hole was large enough.

Sep 22, 2016 | 2004 Mitsubishi Montero Sport

3 Answers

Code po446 what is it


Its what is called the EVAP. system the code is for the vent solenoid .Gas vapor in a vacuum is drawn from the fuel tank when this vent is commanded to be open drawn into a canister filled charcoal and stored until the canister purge solenoid is commanded to open .
This happens when the engine speed is at a higher RPM level and is supposed to send the vapor to the engine to be burned instead of VOC'S going into the atmosphere .But its a crazy lie the last time I filled up more VOCS got into the atmosphere then a gas tank vent could do in 6 month or so .
You can try cleaning the filter in the vent solenoid it might work but the part is about 70 dollars its in the rear between the tank and the canister look for hoses .

Jun 18, 2016 | 2006 Chevrolet Impala

2 Answers

Code P0446 2008 chevy tahoe


PO 446 Evap System Vent Solenoid issue

Nothing to do with the canister

Have to test parts & only replace those that fail

Smoke the system & test all the evap components

Scan tool data may help

Google your codes

Type: OBD PO446

Jul 30, 2014 | 2008 Chevrolet Tahoe

1 Answer

Why does the gas pump cut off every 1/2 to 1 gallon on my 2003 Hyundai Accent, at slow pump even when the tank is nearly empty. It doesn't matter what station I go to.


Failure in the Evap System

Check for Evap Codes & diagnose that system

Most likely a failed evap vent solenoid

Google : OBD PO446 thru PO449 & read up

Jul 24, 2014 | Hyundai Accent Cars & Trucks

1 Answer

P0446 2007 gmc yukon


Always Google any codes you get & read up

PO446-Evap System Vent Control Circuit Malfunction

If the Evap Vent Valve or it's control circuit are bad, then
you can't fill the fuel tank

Mar 04, 2013 | 2000 GMC New Sierra 1500

1 Answer

My truck hesitated and got a po446 code whats wrong?


vent control on evaporative system is bad--are u filling tank too full-one click on gas pump and no more--may need to take vent assembly down and cleanit--wait a day or so

May 21, 2011 | Chevrolet Blazer Cars & Trucks

3 Answers

Toyota seinna po440, po441, po446


you have to understand that there is a leak in the system other than the gas cap for the evaporative system. The system needs to be professionally closed, and smoke introduced into to find the leak, and a through component check, eg.. purge valve vapor canister vent solenoid all functioning correctly

Jun 17, 2009 | 1998 Toyota Camry

1 Answer

Have a code of po446 on 2001 prism how do i fix


Check and verify you gas cap is installed and tight. Clear codes and drive to see if code returns.

Mar 29, 2009 | 2001 Chevrolet Prizm

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