Dec 062013
 

I’m getting po700 (general transmission probs), p0837 and p0839 codes – 4 wd high voltage swith codes.  also part time dash message is mostly on (sometimes intermittent – on/ off)

I thought I saw a post elsewhere indicating I can change out a switch… can’t find it again, don’t know where or how to change out the switch if really possible.

any idea or help would be appreciated

thanks /jh

  One Response to “2004 Jeep Liberty”

  1. P0837-4WD MUX SWITCH PERFORMANCE

    SET CONDITION
    The 4WD mixed switch input detected in an invalid range or irrational switch state.

    POSSIBLE CAUSES
    Related DTCs present
    Transfer case shifter out of adjustment
    Transfer case position sensor out of tolerance
    Powertrain/engine control module

    P0839-4WD MODE SENSOR HIGH

    SET CONDITION
    When the 4WD Mode Sensor input circuit voltage raises above 4.78 volts for 5.72 seconds.

    POSSIBLE CAUSES
    Transfer case position sensor input circuit open
    Transfer case position sensor input circuit short to voltage
    Transfer case position sensor
    Powertrain/engine control module
    Intermittent operation

    It should be the transfer case position switch. The dealer should swap it out for around $250

    Jeep Liberty 4wd switch

    Jeep Liberty Transfer Case Switch

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