having issue with boost pressure sensor

Discussion in 'Volvo Forum' started by kmctrucking, Dec 19, 2014.

  1. kmctrucking

    kmctrucking Bobtail Member

    3
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    Dec 18, 2014
    galax, va
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    I have a 2011 volvo 780 with a cummins isx, it has two problems currently. the codes I have been able to find are mid 128 pid 102 fmi 2 and mid 128 pid 411 fmi 0.
    I know what they are, but my question is this, can the 102 boost pressure code cause the 411 egr code? the boost pressure started randomly throwing an active code this week. it didn't seem to do much really other than lose hp. the check engine light would go off then it would act fine. today the 411 showed up and now it's acting worse. when the check engine light goes off though, it acts more or less fine again.
    current symptoms, idle is erratic, pulling hills is a slight hesitation, and regen is acting up. it's almost as if it has the hiccups. the regen comes on after most check engine lights go off. parked regen is impossible until the boost sensor is fixed I'm assuming. it won't do it at all. still the coincidence of the codes happening at the same time are what I would like to know. we have an appointment to get this resolved somehow also.

    thanks in advance
    Deana
     
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  3. nasriza

    nasriza Road Train Member

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    Feb 1, 2013
    Chicago, IL
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    Usually they are related together or they go hand in hand it is possible that's the egr is also causing low boost by maybe getting stuck open newer truck every sensor almost works with each other
     
  4. kmctrucking

    kmctrucking Bobtail Member

    3
    1
    Dec 18, 2014
    galax, va
    0
    Thanks for that, we had the 102 code first and thought it was the only issue. When we get it to the shop, we'll look into it all.
    Thanks
     
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