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inverter-related codes and "check hybrid system" warning

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Hybridpilot, May 29, 2022.

  1. Hybridpilot

    Hybridpilot Junior Member

    Joined:
    May 29, 2022
    2
    1
    1
    Location:
    Los Angeles
    Vehicle:
    2015 Prius
    Model:
    II

    Hello, appreciate any input you can offer. I was driving on surface streets when suddenly I got these warnings--

    Check hybrid system. Stop the vehicle in a safe place.
    slip indicator
    master caution
    check engine
    brakes

    Car was still driveable with ICE, no battery status showed. I got it home (a few miles) and it's been parked. I'm able to start it and got these OBD codes:

    P0A7A Generator Inverter Performance
    P0A94 DC/DC Converter Performance
    P324E MG ECU Power Relay Intermittent Circuit
    C1259, C1310 brake/skid ECU

    What's the most likely failure here and likely cost to repair? I did have the firmware update recall done in 2020. 12v batt is about a year old.

    I can still start it. Would it be safe to drive to a mechanic?

    Thanks
     
    #1 Hybridpilot, May 29, 2022
    Last edited: May 30, 2022
  2. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    11,517
    14,128
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius
    Model:
    Two
    Welcome. Sorry about your problems. Unless you have over 150k miles on it, it's under warranty in CA. If it was mine and the dealer was less than 10 miles away on slow roads, I might try to limp there. But it's always safer to have it towed on a flat bed. Either way, it looks like it needs professional help and not from "Joe Mechanic." It'll need someone who knows Toyota hybrids.
     
    #2 jerrymildred, May 30, 2022
    Hybridpilot likes this.
  3. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    To simplify the list of codes a little, the first three are all trouble codes from the power management control ECU.

    The last two, C1259 and C1310, are nothing but codes the brake ECU sets whenever there are codes in the power management control ECU. So we know why those are there, and just need to figure out what's caused the first three codes. :)
     
    #3 ChapmanF, May 30, 2022
    Hybridpilot and jerrymildred like this.
  4. Hybridpilot

    Hybridpilot Junior Member

    Joined:
    May 29, 2022
    2
    1
    1
    Location:
    Los Angeles
    Vehicle:
    2015 Prius
    Model:
    II
    closure! here's what was wrong. $2865 total but free to me under warranty
    upload_2022-6-11_11-7-5.png
     
    #4 Hybridpilot, Jun 11, 2022
    Half Vast likes this.
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,284
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    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    ah, the old 'stopped dead in the middle of the highway and everyone was killed' ipm problem.

    glad they covered it for you.
     
    #5 bisco, Jun 12, 2022
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