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Evaporative Emission Control System Pressure Sensor Range/Performance

O2 sensor?
 

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The info I posted(in the link) is a wiring problem between sensor and ecm or the ecm is bad.You would need a meter and some wire to test.No sure about the out of range info you posted.
 

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I got a 2ZZ swap, and now get P0451 error code

does anybody knows were is the sensor so I can check if it's correctly connected ?

thanks
 

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This happend to me too.

the evap purge valve was busted.
and i had to replace the charcoal canister.
toyota charged me a few hundred dollars for all of it.
really sucked ass.
i think i got ripped.
sounds like a recall to me
 

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Vapor pressure sensor is on top of the gas tank. If you lift up your rear seat, there is a small cover, lift that vover up and you will see the sensor.

Charcoal canister is on top of your muffler, Remove the muffler and then remove the heat shield on the top, you will see the canister.
 
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