Question about 1999 Ford Expedition

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I have a code po453

I conect the check engine ligth,so I cunect my pocketscan and I have a code po453

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Posted on Oct 26, 2012

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This Code means the Evaporative Emission pressure switch has a high reading. Something may be clogged, see what the parts clerk recommends. Sometimes a purge valve fails to open and the cannister gets saturated, straightens out when switch works.

Posted on Oct 26, 2012

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