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?

Posted on Mar 01, 2009

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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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How much to replace


Google your codes

TYPE: OBD & your codes

OBD PO446

Evap System Vent Control Circuit Malfunction

Why--have to do the proper testing of the system
solenoids & valves & hoses to tell that

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What is the part need to buy for pO441,po440,po446


Codes have nothing to do with parts

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
PO446---EAVP Vent Control Circuit Malfunction

I think a repair shop is your best bet to smoke test
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NOPE CANT ERASE CODES UNTIL THE PROBLEM IS FIXED OR THE SERVICE ENGINE LIGHT SOON WILL STAY ON. CODE PO441 - EVAPORATIVE EMISSION EVAP SYSTEM INCORRECT FLOW DETECTED.CHECK INTAKE VACUUM HOSE CONNECTIONS AT THE EVAP CANISTER PURGE VALVE.IF ALL IS GOOD.THE EVAP CANISTER PURGE VALVE COULD BE BAD. CODE PO 442 - EVAPORATIVE EMISSION EVAP SYSTEM SMALL LEAK DETECTED. EVAPORATIVE EMISSION SYSTEM LARGE LEAK DETECTED FUEL CAP LOOSE OR OFF MISSING. CODE PO 446 - EVAPORATIVE EMISSION EVAP SYSTEM VENT CONTROL CIRCUIT MALFUNCTION.

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Most of the time they mean:
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p0422 =
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MOre info at http://www.obd-codes.com/p0442

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2001 camry code po440,po441,po446
what kind of problem and how can be solved
sam

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