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2007 hybrid system HELP!!

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Chess Roach, Nov 27, 2017.

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  1. Chess Roach

    Chess Roach New Member

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    Hi all,

    I have a 2007 Prius about a month ago I got the triangle of death, vsc and yellow exclamation and check engine light. When this happened my Prius switched into "half power"...the engine revved high RPM's. I pulled over and turned the car off. I let it rest for 10 mins and restarted it with the lights still on. on my way home it did the "half power" thing 2 more times.
    I checked the voltage on all my cells and found one was at 6.93...the next day it exploded.
    I replaced that cell but am getting the problem of the hybrid system kicking out on me after the codes are clear and it drives and charges normal for 30-70 miles.
     
    #1 Chess Roach, Nov 27, 2017
  2. JC91006

    JC91006 Senior Member

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    You'll need to get the codes when the warnings come on, you can't guess at this
     
    #2 JC91006, Nov 27, 2017
    jerrymildred likes this.
  3. jerrymildred

    jerrymildred Senior Member

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    #3 jerrymildred, Nov 27, 2017
  4. bisco

    bisco cookie crumbler

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    how many miles on her? have you been fiddling with the battery for quite some time?
     
    #4 bisco, Nov 27, 2017
  5. ericbecky

    ericbecky Hybrid Battery Hero

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    Was there a specific question you needed answered?
    Sounds like you have a problem.

    First step would be to gather some data using an OBDII Bluetooth reader and the Torque Pro app running on an android phone/tablet.
     
    #5 ericbecky, Nov 27, 2017
  6. Chess Roach

    Chess Roach New Member

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    228k. Yes I have been fiddling with it for about 2 months.
     
    #6 Chess Roach, Nov 29, 2017
  7. ericbecky

    ericbecky Hybrid Battery Hero

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    Get an OBDII reader and then you see live data like this at a glance. Especially helpful when wanting to look at a battery you are working on while it is in the car.
    Screenshot_20171116-090510.png
     
    #7 ericbecky, Nov 29, 2017
  8. Chess Roach

    Chess Roach New Member

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    228k. Yes I have been fiddling with it for about 2 months.
     
    #8 Chess Roach, Nov 29, 2017
  9. Chess Roach

    Chess Roach New Member

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    I got the code pulled this morning "C1241"
     
    #9 Chess Roach, Nov 30, 2017
  10. Chess Roach

    Chess Roach New Member

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    C1241
     
    #10 Chess Roach, Nov 30, 2017
  11. ericbecky

    ericbecky Hybrid Battery Hero

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    Go back and double check the connections at the 12v battery.
    Specifically
    - nut that closes the clamp on the positive terminal
    - nut that closes the clamp on the negative terminal
    - bolt that attaches the ring terminal of the negative lead to the body of the car
    Make sure there is no corrosion on those connections.

    And, of course, make sure 100%, that the 12v battery is in good health.

    I have seen odd codes when these connections are loose or corroded.
     
    #11 ericbecky, Nov 30, 2017
    Raytheeagle likes this.
  12. Chess Roach

    Chess Roach New Member

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    When I do the diagnostic vehicle signal check it reads 11.2-11.7 under load.
     
    #12 Chess Roach, Nov 30, 2017
  13. ericbecky

    ericbecky Hybrid Battery Hero

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    Check it with your foot one the brake, high beams on, and climate control fan on high.

    Does it still remain above 11v?
     
    #13 ericbecky, Nov 30, 2017
  14. Chess Roach

    Chess Roach New Member

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    YES
     
    #14 Chess Roach, Nov 30, 2017
  15. ericbecky

    ericbecky Hybrid Battery Hero

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    ok. Not great but maybe good enough.
    Now go and fully check the connections I mentioned.
     
    #15 ericbecky, Nov 30, 2017
  16. Chess Roach

    Chess Roach New Member

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    mber: 159823"]YES[/QUOTE]

    Give me 10 to recheck
     
    #16 Chess Roach, Nov 30, 2017
  17. Chess Roach

    Chess Roach New Member

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    ok everything is tight and no visible corrosion. I did do the battery check again and I turned on everything i could think of and the voltage dropped to 10.7
     
    #17 Chess Roach, Nov 30, 2017
  18. ericbecky

    ericbecky Hybrid Battery Hero

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    I would get rid of that battery.
    Too marginal at best.

    Or at least put a different one in there temporarily.
     
    #18 ericbecky, Nov 30, 2017
  19. Chess Roach

    Chess Roach New Member

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    So my car did the HV battery kicking out thing 4 times today.
    So I stopped and got the codes pulled again.
    C1241
    C1259
    C1310
    P1121
    P0A80
    P3015
    P3023
    P3024
    P1116
    Could ALL these be caused by a bad 12volt Batt?
     
    #19 Chess Roach, Nov 30, 2017
  20. fotomoto

    fotomoto Senior Member

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    These codes: P0A80, P3015, P3023, P3024 point to a failed hybrid battery (multiple module failures). The others can be red herrings and erroneous and should be put aside till the battery issue is taken care of.

    Gen2 HV batteries are beginning to fail at an ever increasing rate. IMO, next year is going to be very busy around here. You can see what I did by following the link in my signature. It spells out your options.

    GOOD LUCK!
     
    #20 fotomoto, Nov 30, 2017
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