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Mid 128 PID 102 FMI 5 ?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by v6killer, Aug 27, 2016.

  1. Aug 27, 2016 #1
    v6killer

    v6killer Medium Load Member

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    Dec 6, 2010
    ChicagoLand
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    Had on the Volvo form with no luck trying on here,

    My friend has an 2006 D12 670 he's getting this code in question, he has replace the Low Pressure Sensor on the manifold ( turbo boost sensor ) and still having the same code, plus he has no turbo boost, when this code is Active.
    When this code is not Active truck runs find.
    After replacing the turbo boost sensor the code is Active all the time!
    One more thing when he bought this truck his differential sensors never worked properly sometimes they work or not. Mostly not. Just trying to find out if it's the ECM or the wiring harness or not ?
    Any help would be appreciate.
     
    v6killer, Aug 27, 2016
    v6killer, Aug 27, 2016
    #1
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  3. Aug 27, 2016 #2
    colorado18spd

    colorado18spd Medium Load Member

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    Mar 10, 2013
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    colorado18spd, Aug 27, 2016
    colorado18spd, Aug 27, 2016
    #2
  4. Aug 27, 2016 #3
    colorado18spd

    colorado18spd Medium Load Member

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    Mar 10, 2013
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    Could be the #5 injector?
     
    colorado18spd, Aug 27, 2016
    colorado18spd, Aug 27, 2016
    #3
  5. Aug 27, 2016 #4
    tnevin225

    tnevin225 Road Train Member

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    Just for starters I think checking wiring harness for any places it might have rubbed through.
     
    tnevin225, Aug 27, 2016
    tnevin225, Aug 27, 2016
    #4
  7. Aug 27, 2016 #5
    v6killer

    v6killer Medium Load Member

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    Dec 6, 2010
    ChicagoLand
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    Order and installed, same problem ! ( Manifold boost sensor )
     
    v6killer, Aug 27, 2016
    v6killer, Aug 27, 2016
    #5
  8. Aug 27, 2016 #6
    v6killer

    v6killer Medium Load Member

    446
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    Dec 6, 2010
    ChicagoLand
    0
    Why do think it a fuel injector problem?
     
    v6killer, Aug 27, 2016
    v6killer, Aug 27, 2016
    #6
  9. Aug 27, 2016 #7
    GrapeApe

    GrapeApe Road Train Member

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    Most likely a wiring issue with the manifold pressure sensor. FMI 5 is low current, so I'd be looking for a bad connection in a connector or wiring back to the ECM. If you can't find a bad spot in the harness, you'll need to take the connector off the ECM to check the pins and test the harness. An ohm test may not show you a problem since it sounds like it's intermittent. I'd disconnect all the wires at both ends and jump power to them for a voltage drop test. Or have two people, 1 to wiggle the harness and the other to watch for fluctuations.
     
    GrapeApe, Aug 27, 2016
    GrapeApe, Aug 27, 2016
    #7
    mohamed alhoriby and v6killer Thank this.
  10. Aug 28, 2016 #8
    GrapeApe

    GrapeApe Road Train Member

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    I missed the mention that the code stays active once the sensor was changed. I'd be looking very closely at the harness end that plugs into the sensor. Grab each wire and give them the 10 lb pull test. It's not uncommon to have wires break internally at the connector and they may have been disturbed when the sensor was changed.
     
    GrapeApe, Aug 28, 2016
    GrapeApe, Aug 28, 2016
    #8
    v6killer Thanks this.
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