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Anyone successfully cleared permanent P0A80 DTC?

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by vallesj, Sep 8, 2024 at 1:01 PM.

  1. vallesj

    vallesj Junior Member

    Joined:
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    Vehicle:
    2013 Prius
    Model:
    Three
    Ok, I've spent an afternoon and a morning trying to follow procedure to clear this DTC. What I may doing wrong? I am following Chilton Library instructions:
    Confirmation driving pattern
    1. Connect techstream to DLC3
    2. Turn the power switch on (IG) and turn the Techstream on.
    3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure)
    4. Turn the power switch off
    5. Turn the power switch on (READY) and turn the techstream on. (I don't understand why you need it on at this step)
    6. Perform a "Universal trip".
    7. With the select lever in N, leave the vehicle until SOC drops to 30%
    8. Enter the the menus powertrain/hybrid control/trouble codes
    9. check that permanent DTCs are cleared (the P0A80 still shows up as permanent only)
    10. Notes, if permanent DTC is not cleared, repeat step 6 and 7.
    Definition of universal trip:
    1. Put the engine in inspection mode (this step requires you to start it with the engine off, and on IG, otherwise the mode cannot be enabled)
    2. idle the engine for 30 seconds or more
    3. Drive the vehicle at 25mph or more for a total of 5 minutes or more
    4. allow 10 minutes or more to elapse from the time the engine is started.
    For entering "inspection mode" (actually the dash screen shows Maintenance Mode)
    I had used VTCI cable and laptop with Techstream.
    I had used BT dong and Dr. Prius app. and OBDLink
    and the manual step with a device which is " on IG and within 60 seconds push 2x accelerator when in parking, push 2x accelerator when in neutral and push 2x accelerator when in parking. Then turn on (ready).

    I had done step 6 and 7 three times:
    • First 3 times cycle, by not turning off the engine when repeating step 6. Since I was already on "Maintenance mode" I considered no need to turn it off so that I can enable that mode again.
    • Second 3 times cycle, turning off the engine for step 6 (Universal trip graphs shows to start it off, then +30s iddle, +5min over 25mph, and wait for total 10 minutes since started the engine to switch it off.
    • Since there is a "hint" that the driving pattern can be performed consecutively in the same driving cycle, so before I switch it off, i left it on N until SOC reach lower than 30%
    I am not getting any new or pending DTC, so it is an indication that my HV battery is acceptable now after the repair, no more "check hybrid system". But that permanent P0A80 dtc is still there. Any clue what I am doing wrong or what step I am missing? May be I need to let the car cooldown before the next universal trip is performed? I noticed there is "number of warm-ups since DTCs cleared" so may be "3" or higher number.
     
    #1 vallesj, Sep 8, 2024 at 1:01 PM
  2. bkman

    bkman Junior Member

    Joined:
    Apr 2, 2012
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    Location:
    Greater Seattle Area, WA
    Vehicle:
    2010 Prius
    Model:
    V
    Permanent codes are usually clear themselves out after some time when the codition is no longer present. This happened when I forgot to hook up the hybrid battery after replacement.

    The coded cleared after a couple of days.
     
    #2 bkman, Sep 12, 2024 at 4:28 AM
  3. ChapmanF

    ChapmanF Senior Member

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    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    It depends on the code, because every code has its own confirmation driving pattern. If you don't go drive that pattern on purpose, then how long it takes depends on the way you normally drive and how long until you've randomly happened to hit all the same conditions as in the confirmation pattern.

    This is an unusual thread, though, as the OP really has looked up P0A80's confirmation pattern and gone through it on purpose, and hasn't seen the code go away. That's weird, and I'm kind of stumped myself.
     
    #3 ChapmanF, Sep 12, 2024 at 2:44 PM
  4. vallesj

    vallesj Junior Member

    Joined:
    Sep 28, 2007
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    Vehicle:
    2013 Prius
    Model:
    Three
    There is other permanent codes there, maybe I need to clear them out before trying again the P0A80. Those are related to evap (p0441, p0455 and p0456 ), a loose or cracked hose, I don't know. They are not critical but is time I need to spend troubleshooting.
     
    #4 vallesj, Sep 12, 2024 at 3:27 PM
  5. ChapmanF

    ChapmanF Senior Member

    Joined:
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    Location:
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    Vehicle:
    2010 Prius
    Model:
    IV
    I drove around with a permanent P0102 for close to a year because, as it turned out, the confirmation pattern was missing a step in the old Repair Manual edition I was looking in. The member Elektroingenieur looked up the same procedure in the up-to-date manual online on TIS, and sure enough, there was a step that had been left out before.

    It was during the pandemic, and my greatly-curtailed driving had never quite hit all the conditions of that pattern for most of a year.
     
    #5 ChapmanF, Sep 12, 2024 at 5:04 PM
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