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Shudder and Check Hybrid System

Discussion in 'Gen 3 Prius Technical Discussion' started by Sam Buice, May 15, 2023.

  1. Sam Buice

    Sam Buice New Member

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    Location:
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    Vehicle:
    2010 Prius
    Model:
    LE
    I have a 2010 Prius with 250,000 miles. It shudders, I think maybe when it goes from electric to gas. Yesterday the Check Hybrid System light and triangle came on and she stalled. Restarted and made it home. Coil pack, plugs and injectors have been replaced, in an attempt to stop the shudder. Any ideas would be appreciated.
     
    #1 Sam Buice, May 15, 2023
  2. bisco

    bisco cookie crumbler

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    get the codes read at a dealer or someone with tech stream and post them here
     
    #2 bisco, May 15, 2023
  3. mikeflores2000

    mikeflores2000 Junior Member

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    IV
    I had the same problem solved by replacing a dying traction hybrid battery. It’s the high voltage 200v. Others will tell you it’s a blown head gasket.
    Typically shudders in cold morning startups and goes away after warm up.
     
    #3 mikeflores2000, May 27, 2023
  4. mikeflores2000

    mikeflores2000 Junior Member

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    Autozone provides a free OBD reader if your vehicle is in parking lot. Expect POA 080. It’s a DTC ( diagnostic trouble code ) Check Hybrid System ie replace Hybrid battery. Attached screenshot below.
     

    Attached Files:

    #4 mikeflores2000, May 27, 2023
  5. Mendel Leisk

    Mendel Leisk Senior Member

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    Vehicle:
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    Model:
    Touring
    When is the shudder, any time, or just during start up?

    Are you first owner?

    Ever cleaned the intake and EGR components?

    Check for codes.
     
    #5 Mendel Leisk, May 27, 2023
    ukulelegeek likes this.
  6. mikeflores2000

    mikeflores2000 Junior Member

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    Location:
    Merced, CA
    Vehicle:
    2010 Prius
    Model:
    IV
    During cold morning startups and after DTC
    P0A080 thrown now during shutdown sounding
    like old school preignition knock.
    I’m the original owner and never cleaned or replaced injectors, coils, EGR nor PCV.
    My 3rd gen 2010 Prius has just under 193k miles.
    Replacing hybrid battery fixed all issues.
    Recalculating MPG. Hope better than 33.
     
    #6 mikeflores2000, May 27, 2023
    ukulelegeek likes this.
  7. Mendel Leisk

    Mendel Leisk Senior Member

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    Touring
    Head gasket is probably failing.
     
    #7 Mendel Leisk, May 28, 2023
    ukulelegeek and Grit like this.
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