DTC help, please

Discussion in 'Engine and Performance' started by Truemagnum15, Mar 5, 2017.

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  1. Truemagnum15

    Truemagnum15 Junior Member

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    Joined:
    Oct 26, 2016
    Location:
    Washington State
    Ram Year:
    1999
    Engine:
    5.9L
    We have a 1999 Dodge Ram 1500 automatic 360 V8. The scan tool gave my husband two codes. We would greatly appreciate any help deciphering them.

    First code is PO138 and says 02 Sensor circuit high voltage (Bank no. 1 sensor sensor no. 2)


    Second code is P1391 and says Intermittent loss of CMP or CKP signal.

    Thank you for your time.
     
  2. Jrjohnson1969

    Jrjohnson1969 Junior Member

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    5
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    Joined:
    Feb 18, 2017
    Ram Year:
    2006
    Engine:
    5.9 common rail
    The 1391 code is the camshaft sensor. I have seen a lot of posts on another site about having to change out the distibutor to get the code to go away. I'm guessing the cam sensor is in the distributor. If the cam sensor and/or distributor are replaced and still have code cone back, it could also be the crankshaft position sensor. The oxygen sensor should be after the catalytic convertor since it says sensor 2. Hope this helps you some.
     
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  3. Truemagnum15

    Truemagnum15 Junior Member

    Posts:
    28
    Likes Received:
    1
    Joined:
    Oct 26, 2016
    Location:
    Washington State
    Ram Year:
    1999
    Engine:
    5.9L
    Thank you very much
     

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