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Engine check shows PO441 and PO445 - 2006 Toyota Tacoma

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Http://www.toyotanation.com/forum/showthread.php?t=254454

check your gas cap. If that was the problem the check engine light will reset itself after several start stop cycles

Posted on Sep 13, 2010

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What these codes mean po441 po445


evaporitive emission vapor system is leaking due to loose gas cap or damaged vapor canistor box that is located near rear bumper

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Check engine lit on code po442,po445


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Purge flow valve/ pump system [po441]


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2001 Camry code po440,po441,po446 after engine


2001 camry code po440,po441,po446
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Check engine light on po441


P0441 = Evap. Emission Ctrl. System Incorrect Purge Flow. Listed Cause - valve stuck in open position.
INSPECTION (4 cylinder engine)
When disconnecting the vacuum hose, make an identification mark on it so that it can be reconnected to its original position.cc59427.jpg 1. Disconnect the vacuum hose (black with red stripe) from the solenoid valve. 2. Detach the harness connector. 3. Connect a vacuum pump to the nipple to which the red-striped vacuum hose was connected. 4. Apply vacuum and check when voltage is applied to the EVAP Canister Purge Solenoid Valve and when the voltage is discontinued.
31f3588.jpg Battery voltage Normal condition
When applied Vacuum is released
When discontinued Vacuum is maintained

V6 Purge Solenoid Valve
bc8d2fa.jpg

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1997 toyota camry check engine light on codes are po441,po446


p0446 is an evap code for incorrect purge flow, check the rear vacume switching valve. its above the rear sub frame

Apr 05, 2009 | 1997 Toyota Camry

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1997 toyota camry check engine light on,code po440,po420,po441,


P0420 is catalyst system efficiency below threshold (bank 1)

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


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

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