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    jcrew255's Avatar
    jcrew255 Posts: 1, Reputation: 1
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    #1

    Sep 10, 2012, 02:48 PM
    Evap emission control system leak po442
    I have a 2000 jeep grand cherokee and the code evap emissions control leak po442 is coming up when I plug the machine in for the check engine light. What does that mean?
    RickMN's Avatar
    RickMN Posts: 244, Reputation: 52
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    #2

    Sep 10, 2012, 04:32 PM
    Here's a link to a description of the Chrysler EVAP system. The problem can be as simple as a cracked hose, or as bad as a new leak detection pump.

    Chrysler EVAP Codes
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