Help U0129 U0146 C1242 C1310 P3108

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Steve 72, Apr 4, 2026 at 8:41 AM.

  1. Steve 72

    Steve 72 Junior Member

    Joined:
    Oct 5, 2023
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    Location:
    Maryland
    Vehicle:
    2007 Prius
    Model:
    Base
    07 Prius
    Has the following codes.
    Car will start and drive but
    No dashboard lights
    No power windows
    No power steering
    No climate control
    Changed fusible link under hood so far
    Ecu opened and no visible damage
    At a loss and am ready to junk the car
     
    #1 Steve 72, Apr 4, 2026 at 8:41 AM
  2. Steve 72

    Steve 72 Junior Member

    Joined:
    Oct 5, 2023
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    Location:
    Maryland
    Vehicle:
    2007 Prius
    Model:
    Base
    Don’t know if it’s in ready mode because no Speedo lights at all replaced cap in combo meter no change
     
    #2 Steve 72, Apr 4, 2026 at 8:43 AM
  3. Brian1954

    Brian1954 Senior Member

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    Location:
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    Vehicle:
    2011 Prius
    Model:
    III
    The OP created an earlier thread (2 days before creating this thread) where he described what happened to cause the problem that he is having with the car. If you are interested in helping the OP, please read that earlier thread, https://priuschat.com/index.php?posts/3603687
     
    #3 Brian1954, Apr 4, 2026 at 8:59 AM
  4. ChapmanF

    ChapmanF Senior Member

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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    I would focus, first, on the repair manual troubleshooting steps for the C1242 and the communication codes (the U codes and the P3108, which is a communication code despite starting with a P). There could be some wiring damage somewhere, for example. The C1310 may take care of itself when other issues are resolved.

    Toyota Service Information and Where To Find It | PriusChat

    There was some recent discussion about C1242 right in ➡this thread⬅.
     
    #4 ChapmanF, Apr 4, 2026 at 10:14 AM
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