Question about 2002 Jeep Liberty

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What does the code 1494 mean for a Jeep liberty 2002

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P1494-LEAK DETECTION PUMP SW OR MECHANICAL FAULT

Posted on May 27, 2010

  • vickie_manci May 27, 2010

    What is meant by the mechanical fault, and where is the LDP?

  • tuyen bui May 27, 2010


    • could be any thing below so just visualize the components to see any defect
    • LDP vacuum supply
    • LDP switch sense circuit shorted to ground
    • LDP switch sense circuit open
    • Faulty leak detection pump
    • Wiring harness intermittent
    • Powertrain control module

    The Leak Detection Pump (LDP) is bolted to the front of the fuel tank


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What could the problem be! I just did a smog check and everything passed accept code 1494.


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