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2002 Prius Slips Into Neutral

Discussion in 'Generation 1 Prius Discussion' started by Benmuir, Dec 19, 2013.

  1. Benmuir

    Benmuir New Member

    Joined:
    Dec 17, 2013
    7
    1
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    Vehicle:
    2002 Prius
    Model:
    I
    So I am getting really sick of my 02 Prius...it only has 124k miles on it.

    So what is happening now is that I'll be driving when all of a sudden the car slips into a neutral mode. The engine revs when I hit the accelerator but produces no power. So I pull over, throw it in Park, turn the car off, and when I restart, it is back to normal.

    I have seen forums on here about this but have not found the culprit...

    These are the codes I'm getting...I know this slippage is only one of my problems..
    p1437
    p3191
    p3006
    p3011

    Question:
    Does anyone know what this is? And is it a simple fix?
     
    #1 Benmuir, Dec 19, 2013
  2. kutcht1

    kutcht1 Member

    Joined:
    Nov 25, 2013
    305
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    Location:
    Andover, Minnesota
    Vehicle:
    2008 Prius
    Model:
    N/A
    WOW, that stinks. When was the last time the ATX fluid was changed? Does seem like it may be electrical if is acts normal after shutting car off. I searched and saw a thread is what causes this it's the shifter assembly, bad contacts. also saw this thread:

    Transmission Slipping !!
     
    #2 kutcht1, Dec 19, 2013
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
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    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    1. You need to replace the traction battery.
    2. You need to clean the throttle body interior and throttle plate.
    3. You need to replace the accelerator pedal sensor.
     
    #3 Patrick Wong, Dec 19, 2013
  4. bwilson4web

    bwilson4web BMW i3 and Model 3

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    Location:
    Huntsville AL
    Vehicle:
    2018 Tesla Model 3
    Model:
    Prime Plus
    Please update your profile or post the nearest city and state where you live. The reason is we can recommend independent Prius shops that will have the tools and expertise to help diagnose the problem. You don't have to use them but at least you'll have more resources.

    With one minor exception, I agree with Patrick's suggestions:
    I would like to see more details about the traction battery health. I prefer seeing the 19 module-pair voltages before calling for a replacement.

    Also, I would probably want to look at the 12V battery voltages, measured at the terminals, both powered off and with the car in "READY."

    Bob Wilson
     
    #4 bwilson4web, Dec 20, 2013
  5. yotatoter

    yotatoter Member

    Joined:
    Mar 16, 2011
    161
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    Location:
    Ohio
    Vehicle:
    2001 Prius
    Model:
    I
    Your battery deffinately needs to be repaired,that will make it go into what you call "transmission slipping".I would personally start with the traction battery and clean your throttle body. Your accelerator pedal code may also be a product of your traction battery..Keep us posted and let us know where you are located please..
     
    #5 yotatoter, Dec 21, 2013
  6. Benmuir

    Benmuir New Member

    Joined:
    Dec 17, 2013
    7
    1
    0
    Vehicle:
    2002 Prius
    Model:
    I
    UPDATE:

    Just replaced my Traction battery and have only been driving for a little bit with it and there has been no slipping yet. Ill update in a month or so
     
    #6 Benmuir, Jan 25, 2014
    yotatoter likes this.
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