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Auto zone diagnosed po446, engine light is on

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P0446 CHEVROLET - Restricted/Blocked EVAP Vent Path

Possible causes Dirt and dust intrusion into the EVAP canister vent hose assembly, resulting in restricted air flow, may cause this condition.

Posted on Mar 17, 2011


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Check engine light just came on went to auto zone diagnostics won't read the computer the tech said probably a fuse what fuze and where would that be located?

What kind of help were they?
Did they check all fuses?
Take to a repair shop & get
it properly diagnosed & repaired
Google the Codes you got at auto zone,
to see the system with the fault

Aug 01, 2013 | Cars & Trucks

2 Answers

A check engine light came on not sure what it is

You are going to have to take it to a mechanic... You cant know for sure what an engine check light is trying to tell you until you plug it into a diagnostic tool.

Sep 17, 2012 | 1995 Toyota Avalon

1 Answer

Reduced engine power light comes on and engine stalls

Hello: You need to have the codes read so you can diagnose the problem and repair it. Auto Zone, Advance Auto or O'Reilly may read the codes and not charge you.

Aug 06, 2011 | 2002 GMC Envoy

2 Answers

Engine service soon light indicator is on

go to auto zone and they should read the code for free and point you in the the direction to fix your problems what ever code is first fix that first then do the next thing

May 27, 2011 | 2000 Nissan Xterra

1 Answer

Check engine light came on while accelerating. Barry

Take your vehicle to a local auto parts store (e.g. Auto Zone) and they will diagnose the problem by reading the *Check Engine Light" code. This is a free service.

Good Luck!

Feb 02, 2011 | 2002 Audi A8

1 Answer

Engine light just turned on

an obd 2 scan tool has to be used to diagnose your problem , it can be something minor to something

major. a scan tool will show a defined code as to what the problem is. while you only see an engine

light. most garages and auto repair shops charge you a fee to diagnose the problem. but some auto

parts stores such as auto zone auto parts will diagnose it for free at no charge, they will even give you

a print out of codes to show what parts you may need, and will carry the parts so you don't have to go

all over town. I hope this helps you, good luck!

Feb 01, 2011 | 2007 Chevrolet Tahoe

1 Answer

My service engine light is on and the code is PO446 with the emission system (Advance Auto confirmed the code). What do I need to replace to repair this problem?

What engine? it could be a bad gas cap, thats about all you can check, a repair shop will need to go deeper to diagnose.

Sep 02, 2010 | 2000 Chevrolet S-10

1 Answer

When i am driving the engine light comes on an I cannot accelaraye up to a certain speed

ur truck is in [safe] limp mode to protect itself from damage problem can be from oil pressure issue to brake to tranny problem need to have the trouble light scanned [diagnosed] most auto stores such as auto zone/advanced auto check ur local area offer this scan for free the code will help diagnose ur problem so a repair can be made

Jun 14, 2010 | 2006 Chevrolet HHR

1 Answer


fuel tank pressure sensor. this has somthing to do with the evaporative emmissions system and should be diagnosed by a machanic,cause several malfunctions in this system can cause this code.

Oct 03, 2008 | 1997 Ford Taurus

2 Answers

Trouble shooting po441/po446

Go and buy a VSV for CCV. That should fix your problem

Jul 12, 2008 | 1999 Toyota Camry

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