Question about 2003 Toyota Highlander

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2003 toyota highlander OBD code's po442/po446/po441

Check engine light on I used my OBD11 reader and codes po442/po446/po441 showed up I looked it up and it says auxiliary emissions controls small leak. So if anyone can please tell me how and where to check this it would be great thanks and have a great day.

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  • suncoastavia Dec 21, 2008

    Just wanted to say thank you my air filter was checked and my tether strap is off my gas cap. So thanks you have no idea how you have helped Merry Christmas to ya.

  • suncoastavia Dec 21, 2008

    Just wanted to say thank you my air filter was checked and my tether strap is off my gas cap. So thanks you have no idea how you have helped Merry Christmas to ya.

  • Anonymous Mar 18, 2014

    codes came on

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Toyota camry 1999 has engine light on. Diagnostic Code PO441 appears on testing. What does this code m ean for a 99 Camry?

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If the air filter was recently inspected or changed, look for the vacuum hose to be disconnected from the valve located on the air filter cover. another source may be the gas cap either loose or with the tether strap caught under it preventing a proper seal

Posted on Dec 20, 2008

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Google your codes

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Why--have to do the proper testing of the system
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What is the part need to buy for pO441,po440,po446


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You need to study OBD2 Systems on the internet,
as well as look up those codes & the causes

Google them

( 1998 Toyoya Camry OBD2 PO441)

PO441---EVAP System Incorrect Purge Flow
PO440---EAVP Control System Malfunction
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Tech notes There are factory service bulletin for the following Toyota models:




2003-2004 Toyota 4Runner
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what kind of problem and how can be solved
sam

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