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2004 Prius Red Triangle still after changing 12V

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by atc789, May 11, 2011.

  1. atc789

    atc789 New Member

    Joined:
    Mar 31, 2010
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    Location:
    Ontario CANADA
    Vehicle:
    2004 Prius
    Model:
    II
    Hi everyone,

    I have a 2004 Prius, the Red triangle came on intermittently and went off so I changed the 12V battery last night, after changing it the red warning light went off and everything seemed okay. Today while driving, the warning light came back on. I checked the battery voltage via diagnostic mode on the cars computer and the specs are what they should be. I noticed the following error codes in the computer:
    01-D5, Sub-code: 190-30-8
    01-DC, Sub-code: 190-B7-8
    01-DC, Sub-code: 1C6-4D-F

    Not sure if these are what is causing the problem, but thought I would post them.

    Any ideas what the problem could be?

    Thanks
     
    #1 atc789, May 11, 2011
  2. dogfriend

    dogfriend Human - Animal Hybrid

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    Location:
    Carmichael, CA
    Vehicle:
    2007 Prius
    01-D5 is a registration error in the AV-LAN (Audio Visual Local Area Network)

    01-DC is a communication error in the AV-LAN. The subcodes are clues to which components on the network are having the problem.

    I think these codes are AV diagnostic codes read from the MFD.

    I don't know if this is the source of the Red Triangle. I think you need to read the codes from the Data Link Connector to see if you have any Powertrain codes or other codes with a Toyota scan tool or equivalent.
     
    #2 dogfriend, May 11, 2011
  3. seilerts

    seilerts Battery Curmudgeon

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    Location:
    Santa Fe, NM
    Vehicle:
    2005 Prius
    Pop the hood while in Ig On or Ready and see if the inverter coolant pump is running. That would be a typical cause of getting the red triangle after driving for a while, and having 12V battery problems. This would be trouble code P0A93. Otherwise, get the codes read with a scan tool. It cannot be done from the MFD.
     
    #3 seilerts, May 12, 2011
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