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Code P4055

Discussion in 'Cherokee' started by DaMerican8, Nov 1, 2019.

  1. Nov 1, 2019 at 11:48 AM
    #1
    DaMerican8

    DaMerican8 [OP] Member

    Joined:
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    Member:
    #2993
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    Male
    Vehicle:
    2001 cherokee sport 4.0L
    Bfgoodrich all terrain tires
    I have check engine light on in my 2001 Jeep Cherokee sport. Code came up as P4055 and says large air/vacuum leak. Cannot seem to find the problem

    Tried spraying carb cleaner around all hoses and possible vacuum leak locations. Also listening to blowing air through the system. Nothing yet
     
  2. Nov 1, 2019 at 12:53 PM
    #2
    Awrench

    Awrench Well-Known Member

    Joined:
    May 12, 2018
    Member:
    #2303
    Messages:
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    Gender:
    Male
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    3 jeeps
    any chance that code is P0455?

    You may NOT find a vacuum leak unless the system is performing a 'purge', that is there is no leak after the purge valve as there is NO engine vacuum on EVAP system.

    Do you have your own tools?
     
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