P0501 on 2005 liberty

Discussion in 'KJ General Discussion' started by Tarkhan, Jul 3, 2020.

  1. Tarkhan

    Tarkhan New Member

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    Hello, My liberty shows check engine with P0501 code, the speedometer and the odometer aren't working. I know it's related to a sensor but I can't define which sensor exactly. Anyone can help?
     
  2. tommudd

    tommudd Moderator Staff Member Moderator

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    Start with the wiring that goes from the sensor in the rear diff up to the body
    9 times out of 10 the wiring is broke near body
     
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  3. Tarkhan

    Tarkhan New Member

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    Thank you
    So it's related to the rear diff sensor and its wiring right? it's not a transmission sensors problem, is it?
     
  4. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    No it's not a trans sensor problem.
    Follow the speed sensor wiring from top of rear diff upwards looking for broken wire..
    [​IMG]
     
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  5. Tarkhan

    Tarkhan New Member

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    Thank you so much. I will check this and see if it solves the problem.
     
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  6. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    I just added an edit to it..to follow the wire..^^ see post 4 again.
     
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  7. tommudd

    tommudd Moderator Staff Member Moderator

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    Could of sworn that is what I said , wow
     
  8. Tarkhan

    Tarkhan New Member

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    Just wanted to double check it's not something related to the transmission sensor, thank you so much for your help.
     
  9. Billwill

    Billwill Full Access Member

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    Check the connector on that Diff Sensor is on firmly.
    I had a bad connection there...after fixing it the speedo worked fine but the CEL stayed ON until it cleared itself after driving for a week or two!;)

    Do not know what year your KJ is but all 2005 KJs have a TSB that the wrong diff oil was used at time of assembly that chewed up this sensor. Fix was to drain diff oil, clean out diff, replace diff sensor, fill diff with correct oil!
     
  10. Tarkhan

    Tarkhan New Member

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    Awesome, will check. thank you
     
  11. Tarkhan

    Tarkhan New Member

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    It was the sensor, I've checked the cable and it was fine so I changed the sensor and it worked. Thank you so much guys!
     
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  12. Billwill

    Billwill Full Access Member

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    Maybe time to drain, clean and re-fill the rear diff if you do not know when this was last done although you would expect this oil to have been replaced since the Jeep was built in 2005!;)
     
  13. Tarkhan

    Tarkhan New Member

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    That's what I was thinking of I will do next weekend