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Cummins ISX 2011 Engine Fuel Filter (Suction Side) Differential Pressure

Discussion in 'Trucks [ Eighteen Wheelers ]' started by tallmon, Aug 14, 2015.

  1. Aug 14, 2015 #1
    tallmon

    tallmon Medium Load Member

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    Getting this weird code. Fuel pressure indicators all normal, fuel filter recently replaced.

    Engine Fault Code (||16|0)
    Fault Description: Engine Fuel Filter (Suction Side) Differential Pressure (see also SPN 1382) Cab Controller - Primary Voltage Above Normal, Or Shorted To High Source

    Cummins ISX 2011 on a Kenworth T700

    thanks
     
    tallmon, Aug 14, 2015
    tallmon, Aug 14, 2015
    #1
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  3. Aug 14, 2015 #2
    KeithT1967

    KeithT1967 Road Train Member

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    Curious about this too. I get the same fault on my isx 11 prostar. About once a day It pops up.
     
    KeithT1967, Aug 14, 2015
    KeithT1967, Aug 14, 2015
    #2
  4. Aug 14, 2015 #3
    Heavyd

    Heavyd Road Train Member

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    This code is set when the ECM detects the fuel pressure is actually dropping at higher engine rpms. Basically low fuel pressure. Could be primary or secondary fuel filter, suction restriction, sticking fuel shutoff solenoid or valve parts, weak pressure regulator or worn fuel pump.
     
    Heavyd, Aug 14, 2015
    Heavyd, Aug 14, 2015
    #3
    tallmon and KeithT1967 Thank this.
  5. Aug 14, 2015 #4
    tallmon

    tallmon Medium Load Member

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    OK. Will replace filters this weekend
    Thanks
     
    tallmon, Aug 14, 2015
    tallmon, Aug 14, 2015
    #4
  7. Aug 14, 2015 #5
    KeithT1967

    KeithT1967 Road Train Member

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    That pretty much confirms my theory of why the warning only shows up after ive been above 1500 rpm. Thanx hd
     
    KeithT1967, Aug 14, 2015
    KeithT1967, Aug 14, 2015
    #5
  8. Aug 14, 2015 #6
    Heavyd

    Heavyd Road Train Member

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    Yep, filters first, both if you have two. Then after that I would remove and check the shutoff solenoid valve pieces for wear or sticking.
     
    Heavyd, Aug 14, 2015
    Heavyd, Aug 14, 2015
    #6
  9. Aug 18, 2015 #7
    tallmon

    tallmon Medium Load Member

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    Fuel filters replaced yesterday. No codes so far today.

    Usually I know to change them by the fuel pressure but this time the pressure was fine and we got the code instead.

    Fingers crossed.
     
    tallmon, Aug 18, 2015
    tallmon, Aug 18, 2015
    #7
  10. Jun 20, 2019 #9
    ANTS Manager

    ANTS Manager Bobtail Member

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    Jun 20, 2019
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    I have a Glider with a Detroit and it started this the day I had it serviced and all new filters installed.
     
    ANTS Manager, Jun 20, 2019
    ANTS Manager, Jun 20, 2019
    #9
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