VOLVO D13 - I-shift transmission air leak

Discussion in 'Volvo Forum' started by JerryD13, Oct 3, 2018.

  1. JerryD13

    JerryD13 Light Load Member

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    2012 - VOLVO D13 - iShift Error >"Transmission LOW Air Supply" - Image Attached.

    *getting error message on the dash "Transmission LOW Air Supply"

    also getting the error on dash > "check the transmission at the next stop"

    Please advise on this iShift Transmission issue.

    620K on Transmission

    Thanks much
    ishift, volvo, vnl transmission
     

    Attached Files:

    Last edited: Oct 4, 2018
  2. sirjeff

    sirjeff Medium Load Member

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    Just a hunch but there is a crappy air fitting either up on top or on the left side near the top that is prone to failure.I wish I could be more specific but that's all I can tell ya. Hopefully it's something simple like that!
     
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  3. Benek

    Benek Light Load Member

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    There are 2 air fittings,they leak often,usually I replace them once a year or so. One of them is leaking right now, but you must be leaking big if you getting a message on board. Crawl under with soap water and go nuts. If it's them u should find out quickly
     
  4. KB3MMX

    KB3MMX Road Train Member

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    Check air firing on drivers side of transmission. They had a recall with redesigned fitting for this problem.

    You'll hear it leaking with the truck off...


    .
     
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  5. nasriza

    nasriza Road Train Member

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    there is an air tank on pass side of truck connecting to the three regular air tanks, this tank is the transmission air tank on the inlet you will find a pressure control valve, replace this and then try to see what happens probably valve is stuck and not letting the right amount of air in, if it is not valve then in will be a pressure sensor in the trans most likely.
     
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  6. JerryD13

    JerryD13 Light Load Member

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    Thanks again NazRiza - you got this one correct again - after replacing this 35.00 part

    * Pressure Control Valve * $35.00 @ Volvo dealer

    the error "Transmission LOW Air Supply" disappeared!
     
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  7. JerryD13

    JerryD13 Light Load Member

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    issue resolved
     
    Last edited: Oct 8, 2018
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  8. KB3MMX

    KB3MMX Road Train Member

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    You rock nasriza !
     
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  9. 86scotty

    86scotty Road Train Member

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    No doubt! I love this board.

    Hey Jerry or Nasriza, how hard is this to swap out?
     
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