Dr. Prius P0A80 with a Good Life Expectancy Test

Discussion in 'Prius OBDII Third-Party Apps' started by suomynona, Mar 24, 2020.

  1. suomynona

    suomynona New Member

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    I was using the Dr. Prius app to check out used vehicles when I found one that gave a P0A80 code when doing the Full Battery Test, but then gave a 77% good condition report under the Life Expectancy Test. That Life Expectancy result was higher than many other used cars I've looked at, but I'm worried about that code. The dealer selling the car said they fixed the problem after less than 12 hours, so should I be worried about the condition of the battery and the vehicle? Thanks!
     
  2. rjparker

    rjparker Senior Member

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    Year, model, miles? What did the dealer say he fixed, specifically? Otherwise we are guessing blindfolded. We prefer to do educated guesses so you get what you pay for from this forum.
     
  3. suomynona

    suomynona New Member

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    Sorry, ya, forgot to include some info. So I checked out 2012 Prius v yesterday. The Check Hybrid System Warning light (car with an exclamation point in the middle) was on and the PCS light was flashing sporadically on and off. I didn't see any triangle warning lights. I did the Dr. Prius tests as mentioned previously. I told the seller of the issues I found. They didn't know the car had any issues. They called me today to tell me the issue has been fixed, so I told them I would come check it out again tomorrow. I'm just surprised that I could get a good condition report from the life expectancy test and get a P0A80 code in the full battery test. So just figured I'd ask if anyone has a clue what's going on with the battery of the car or explain how I can get a good condition report with a P0A80 code. I wouldn't think that's possible, but maybe I misunderstand what these reports are telling me.
     
  4. dig4dirt

    dig4dirt MoonGlow

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    Maybe they disconnected the 12v
    or worse.

    Unless it is bargain priced, you may want to walk away.
     
  5. rjparker

    rjparker Senior Member

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    I will guess its over 150k miles. Figure $2300 for a new battery unless they can show you it was replaced. The PCS is part of the advanced tech package which was pretty new back then and available only as an option. Fixing it may be expensive. If its a killer deal and you can afford a few thousand extra, maybe. These cars also have expensive head gasket, oil consumption and egr clogging issues, usually after 200k. I really like mine at 240k because it still rides and drives great, the paint still looks good, gets 40 mpg but I have dealt with some of these issues and expect the rest. Oh, almost forgot about the expensive brake booster issue.
     
  6. suomynona

    suomynona New Member

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    Ya, that's kinda what i'm worried about. A quick fix that doesn't solve the root problem. I guess I'll be able to tell if they did that by everything being cleared though, right? And ya, the deals are getting pretty good I think. I'm seeing old Prius v wagons sold from around $4000 to $8000 around me.

     
  7. dig4dirt

    dig4dirt MoonGlow

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    Well no codes would pop up, or at least some wont.

    There are certain miles that have to be driven until they reappear
    Unfortunately I do not know how many or for which.

    Have you owned Prius before?
     
  8. rjparker

    rjparker Senior Member

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    You can clear a battery code and it will take time to reappear. I would find out what they did to fix the problem and clearing the codes is not a good answer. How many miles?
     
  9. suomynona

    suomynona New Member

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    It's around 135,000 miles. The code was still there. And I found out it was a P0AA6 code, not the P0A80 code. The air conditioning was not that cold and we think it might be related. I showed one of their mechanics the problem instead of the sales person, and they said they would take a look at it. So we'll see if they're able to fix it or not.
     
  10. rjparker

    rjparker Senior Member

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    Your talking about a High Voltage Isolation Fault that can be anywhere including the battery module, the transaxle, the inverter or the AC compressor to name a few. It literally means there is a partial or complete short of the high voltage lines which can be as high as 650v three phase. Sometimes it is the AC connection which is a variable frequency three phase electrically driven compressor. Other times its a problem in the inverter, a weak point in the 2012 model. It could be in the orange wiring, it could be in the drive motors. Bad connections and corrosion in the battery could be a cause. From a troubleshooting standpoint, this error can be difficult and often requires replacement of the module or part involved.

    So be sure its fixed and hopefully get a Toyota backed warranty for at least a few months. Not a third party warranty and be sure it covers the hybrid system.

    The following link is an explanation of the Prius v's high voltage system.
    https://www.nfpa.org/-/media/Files/Training/AFV/Emergency-Response-Guides/Toyota/Toyota-Prius-V-HEV-2012-2014-QRG.ashx?la=en
     
    #10 rjparker, Mar 26, 2020
    Last edited: Mar 26, 2020
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