Multi-display/Cable Problem, Error Code B1248 - HELP!

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by gordonsta, Jul 24, 2009.

  1. gordonsta

    gordonsta Junior Member

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    Port Charlotte, Florida
    Vehicle:
    2015 Prius v wagon
    Model:
    Five
    Short Problem Description:
    Today the Multi-display in my 2005 Prius went haywire. :( I have a couple of after market plug ins, but they have worked flawlessly since their installation over two years ago. I took it to the dealer and they came up with error Code B1248 - "AVC LAN Communication Impossible".

    Detailed background:
    Shortly after purchasing my 2005 Prius I added two aftermarket modules to the Multi-display. The first is the DICE iPod and the second is the Lockpick that unblocks video and audio inputs. The car has performed flawlessly since their install a number of years ago. Today I drove to a destination and parked the car for about 30 minutes. When I started the car I noticed that the Multi-display was not acting properly. I took it to the dealer and they reported that the initial tests showed an error code of B1248. They want $380 to tear into the dash and troubleshoot further:eek:. I picked up the car and brought it home. I removed the Lockpick plug-in but the symptoms were the same.

    Last thoughts:
    Wiring harnesses rarely just fail. Tomorrow I'm going to dig into the DICE iPod plug-in to see if possibly something there has worked loose. I would appreciate any other thoughts about what might have happened.
     
    #1 gordonsta, Jul 24, 2009
  2. vertex

    vertex Active Member

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    2018 Prius Prime
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    Prime Plus
    There are only two connections between the Gateway ECU and the MFD that can cause this problem, or the MFD is has no power. I don't know how these mods are installed. If you need the service manual pages, if you give me your email, I can email you the section.
     
    #2 vertex, Jul 25, 2009
    1 person likes this.
  3. dogfriend

    dogfriend Human - Animal Hybrid

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    I think its likely that something in the Dice failed. Aftermarket electronics are rarely built to the same standards as OEM. However, there is a documented issue with the MultiDisplay in some 2004 and 2005 cars due to a design error.

    Prius MFD
     
    #3 dogfriend, Jul 25, 2009
    1 person likes this.
  4. gordonsta

    gordonsta Junior Member

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    Location:
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    Vehicle:
    2015 Prius v wagon
    Model:
    Five
    Woo-hoo!!! Success!!! This morning I opened up the dash, unplugged the DICE iPod plug-in, powered on the car and the MFD started working properly. :whoo:

    Then I decided to go for broke. I powered down the car, replugged the DICE and powered on the car. Everything was still working. After powering down again, I unplugged the DICE, squirted a bit WD-40 on the contacts before reassembling everything and buttoning the dash back up. I tested it once again and everything was still good.:D

    My last act was to reinstall the Lockpick plug-in. Everything is still working fine. Thank God for small miracles:)
     
    #4 gordonsta, Jul 25, 2009
  5. Ibrahim82

    Ibrahim82 New Member

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    Location:
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    Vehicle:
    2007 Prius
    Model:
    N/A
    Kindly email me....i am having b1248 problem...ur help will be appreciated

    Posted via the PriusChat mobile app.
     
    #5 Ibrahim82, Mar 13, 2017
  6. Ibrahim82

    Ibrahim82 New Member

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    #6 Ibrahim82, Mar 19, 2017
  7. Ibrahim82

    Ibrahim82 New Member

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    Attached Files:

    #7 Ibrahim82, Mar 19, 2017
  8. Marty2go

    Marty2go Junior Member

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    Location:
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    Vehicle:
    2008 Prius
    Model:
    Four Touring
     
    #8 Marty2go, Mar 4, 2020
  9. Marty2go

    Marty2go Junior Member

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    I had this code B1248 show up when I stole the MFD for another car so there wasn't any MFD in the car. NObrainer.
     
    #9 Marty2go, Mar 4, 2020
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