CODES P0A94 and P0A7A QUESTION

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by rudyjoe, Sep 14, 2023.

  1. rudyjoe

    rudyjoe Junior Member

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    I was entering the freeway the other day and as soon as i stepped on the gas to speed up i felt a hipcup/pop sound,all dash warning came on and lost power right then but had the engine running. I exited off and pulled over, turn off the car, then restarted it. All the warning lights were still on and the engine came on so i pretty much slowly limped home a few miles away. This NEW Hybrid Battery was Recently installed and everything was working fine till i hit the gas that day. I noticed that on any street that i had to go up the engine would really rev up and if i let off some on the gas it would calm down. Anyway i'm thinking those codes are telling me its a burnt out (for some reason) Inverter/Converter Unit. I tried to erase the codes but they just came right back on.
    Anyone have this happen too? I'm not sure whats going on if its a issue with connections at the new battery then i can take it back to the shop BUT my worry is upselling and or saying whatever to make money off me as it goes. I like to know more about what i might be dealing with. If it happens to be the unit itself then i will replace it myself and of course be very safe about it. Anyway... Thanks in advance guys.
     
  2. ChapmanF

    ChapmanF Senior Member

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    and that is the luckiest thing to happen to you all year, because the code entitles you to free repair under the warranty extension, which would be out of your pocket if you'd managed to clear the code.
     
  3. rudyjoe

    rudyjoe Junior Member

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    please elaborate. Under warranty extension? NEVER MIND, I JUST SAW WHAT YOU WERE REFERING TO. THANKS!
     
    #3 rudyjoe, Sep 14, 2023
    Last edited: Sep 14, 2023
  4. Fostel

    Fostel Member

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    Was it inverter G9200-47190 or something else in the end?

    I also had P0A7A, P324E and P0A94
    The recovery guy cleared the codes. The P0A7A and P324E are gone but P0A94 is still there. The car is in the limp mode.
    I am looking to purchase the G9200-47190 inverter to replace myself, my only hope is that this is not the transaxle.
     
  5. Brian1954

    Brian1954 Senior Member

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    The inverter is covered by a 20-year Toyota extended warranty. If code P0A94 is current/active, it will be replaced by Toyota dealership for free. Toyota will even pay for towing to the dealership if needed. I will post a link with more information in a few minutes.

    See post #99 (by ChapmanF) in this thread, Inverter IPM - 15 year Warranty Enhancement ZE3
     
    #5 Brian1954, Jun 18, 2026 at 9:28 AM
    Last edited: Jun 18, 2026 at 9:58 AM
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  6. ChapmanF

    ChapmanF Senior Member

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    I don't know if those US warranty enhancements will apply in "Kent", though.

    I suppose there could be many "Kent"s.
     
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  7. Brian1954

    Brian1954 Senior Member

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    Good point.
    There is a Kent located in Ohio, Connecticut, and Washington. Those would be covered.
    There is also a Kent located in the United Kingdom. If the OP is located there, then it is not covered by the warranty in the link that I provided.

    EDIT: I looked at a thread that Fostel created in 2020. It looks like he is located in the UK, so the Toyota USA extended warranty does not apply for him.
     
    #7 Brian1954, Jun 18, 2026 at 1:15 PM
    Last edited: Jun 18, 2026 at 1:39 PM
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  8. Fostel

    Fostel Member

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    Thanks for coming back with the update.

    Indeed, the Customer Confidence Programs (23TE02 / 23TE03) are U.S.‑only and apply to 2010–2015 Prius and 2012–2017 Prius V. They are part of a U.S. class‑action settlement and do not apply in the UK or Europe.

    NutzAboutBolts made a video that sums this up pretty comprehensively:


    Yeah, for some reason, the country disappeared from my profile. Updated already. Thanks.

    Great investigative job – thanks.

    I’m in England, and unfortunately we’re out of luck here when it comes to inverter warranty coverage. Even if I had serviced the car with Toyota (I didn’t), the UK warranty was only 5 years / 100k miles, or up to 10 years if you pay for the extended Relax scheme. My 2013 Auris is now 13 years old with 115k miles, so there’s no point contacting them.

    I’ve found an inverter on eBay for about $200 from Spain (dry climate, and the unit looks clean). It’s from a 2015 car and the seller seems sensible.

    I’m just wondering whether I should replace the pump at the same time. Mine appears to work – I can’t see obvious swirling in the reservoir, but when I turn the car on, the fluid level drops by around 5 mm instantly. Is there a better way to check if the pump is healthy?

    I’ve heard that around 150k miles it’s wise to replace them, although the Gen 3 pump is supposed to be more reliable than the Gen 2. It would be easier to do it now while the inverter is out, but money is tight and I can’t find the AISIN pump locally. I checked Amayama, but that adds time and I need to get the car fixed as soon as possible.
     
    #8 Fostel, Jun 18, 2026 at 1:58 PM
    Last edited: Jun 18, 2026 at 2:18 PM