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2012 Prius V Errors after car wash

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by John Traynor, Jul 30, 2024.

  1. John Traynor

    John Traynor Junior Member

    Joined:
    Jun 2, 2014
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    Vehicle:
    2012 Prius v wagon
    Model:
    V
    While I am no stranger to unfortunate coincidence, I am hoping this is one. I went through. A car wash with car in neutral and engine running.
    the car gave me a “your car is rolling in neutral idiot, put it in park.” Then the car went into power off/ accessory made with a power steering error light on the dashboard.
    I coasted out, restated the car and pulled into a parking space. I turned off the car, waited a minute and restarted.
    The power steering light was gone but now I had both ABS lights, the check engine, and the hybrid error. I used my Veepeak OBD2 and Car Scanner.


    Car Scanner ELM OBD2
    DTC report
    Selected brand: Toyota
    VIN: ************

    ============1==============
    P0A80
    Raw code: 0A80
    ECU: 7EA
    Status: Confirmed
    Hybrid battery pack Deterioration

    ============2==============
    P3000
    Raw code: 3000
    ECU: 7EA
    Status: Confirmed
    High Voltage Battery Fault; HV Battery Malfunction

    ============3==============
    C1259
    Raw code: 5259
    ECU: ABS control unit #2
    Status: Confirmed

    ============4==============
    C1310
    Raw code: 5310
    ECU: ABS control unit #2
    Status: Confirmed

    ============5==============
    P0A80
    Raw code: 0A80
    ECU: Hybrid engine system
    Status: Confirmed
    Hybrid battery pack Deterioration

    ============6==============
    P3000
    Raw code: 3000
    ECU: Hybrid engine system
    Status: Confirmed
    High Voltage Battery Fault; HV Battery Malfunction

    I drove it a few miles, parked and I am still getting the hybrid and check engine lights. I haven’t tried resetting them yet.

    Did I get water in the computer or sensors?

    EDIT 1: ABS error lights went off, error codes went away.

    EDIT 2: I manually reset the hybrid errors and drove 20 miles. They have not returned yet. I’m thinking I have a loose harness that got sprayed.
     
    #1 John Traynor, Jul 30, 2024
    Last edited: Jul 30, 2024
  2. John Traynor

    John Traynor Junior Member

    Joined:
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    Vehicle:
    2012 Prius v wagon
    Model:
    V
    Deleted
     
    #2 John Traynor, Jul 30, 2024
    Last edited: Jul 30, 2024
  3. ChapmanF

    ChapmanF Senior Member

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    Mar 30, 2008
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    The codes that weren't P0A80 were all because of the P0A80.

    The P0A80 indicates that the traction battery didn't hold its balance well while it deep-discharged in neutral in the car wash. Those are conditions very much like the actual "confirmation driving pattern" that's in the repair manual for the P0A80 code: to confirm that the battery is healthy, one part of the pattern is where you shift to neutral and let the ECU see how well it stays balanced in a deep discharge.

    Yours did not pass with flying colors, but since then it has passed a few of the car's self-tests, enough for the current code and light to go away. We could infer that your battery may be a bit long in the tooth, but for now it's saying it's not dead and doesn't want to go on the cart.

    The P3000 was a more-generic hybrid-system-problem code set by the same ECU, because of the P0A80, and the C1259 and C1310 were codes that are set in the brake ECU when it is notified of a hybrid-system problem.
     
    #3 ChapmanF, Jul 30, 2024
    John Traynor likes this.
  4. John Traynor

    John Traynor Junior Member

    Joined:
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    Vehicle:
    2012 Prius v wagon
    Model:
    V
    Holy frijoles Batman. You just spilled a whole can of beans on me. I had AC on full blast because it’s hot and I was draining the battery.

    Time to get the battery longevity app from Dr Prius.
     
    #4 John Traynor, Jul 30, 2024
  5. bisco

    bisco cookie crumbler

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    Location:
    boston
    Vehicle:
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    Model:
    Plug-in Base
    don't use car washes that require neutral
     
    #5 bisco, Jul 30, 2024
  6. ChapmanF

    ChapmanF Senior Member

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    Or, enter them with the battery at a high state of charge, and forgo air conditioning for those couple minutes.
     
    #6 ChapmanF, Jul 30, 2024
    Brian1954 likes this.
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