Brake, ABS, Red Triangle (Display P/S Problem)

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Anthony & his Prius, Jan 16, 2025 at 10:50 AM.

  1. Anthony & his Prius

    Anthony & his Prius New Member

    Joined:
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    2007 Prius
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    Base
    Hello there,

    Please help! After jumping a dead battery due to letting it sit for 2 weeks in cold weather, I had several lights come on (brake light, ABS light, Red Triangle, display say “problem” followed by “P/S”. 12 V battery has been test and is fine. Codes that come up are C1241, C1253, C1256, C1310, C1313.

    I have been driving the car for the past 2 weeks even with the lights. The skid control is not working like it used to in the snow. ABS system doesn’t work as I heard my tires squeal once when hitting the brakes hard. I believe my power steering seems to still be working.

    My current theory: I think I fried the Skid control power supply circuit and/or Brake control power supply assy when I jumped my car. I’m 99% sure I didn’t reverse the polarity. I triple checked!
     
    #1 Anthony & his Prius, Jan 16, 2025 at 10:50 AM
  2. MAX2

    MAX2 Member

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    2007 Prius
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    Start your actions by reading the manual to find and eliminate the causes of errors.

    https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/repair%20manual/04pruisr/05/21avn/cic12414.pdf

    https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/repair%20manual/04pruisr/05/21avn/cic12565.pdf

    https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/repair%20manual/04pruisr/05/21avn/cic13111.pdf
     
    #2 MAX2, Jan 17, 2025 at 5:50 AM
  3. mr_guy_mann

    mr_guy_mann Senior Member

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    If you clear codes, do they come right back?

    All those codes together indicate that the ABS ecu has a problem with the high current power feeds that it uses to run the pump. You need the service information and wiring diagrams to do testing.

    The backup power source has other codes if it is faulty.

    Posted via the PriusChat mobile app.
     
    #3 mr_guy_mann, Jan 17, 2025 at 7:33 AM
    Brian1954 likes this.
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