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International Automotive Technicians Network
Re: Toyota P0440 only
Posted to Technical Discussion Forum on 10/2/2015 5 Replies

Samuel,

First thing before starting the vehicle, read the tank pressure with the KOEO,if the vehicle has been sitting the system should be in a vacuum in the morning. If it is you most likely do not have a leak. If it is at atmospheric pressure (3.3v) then ... Login to read more.

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