2013 prius with all lights on and code p0a7a

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by sabrina seafoam, May 26, 2020.

  1. sabrina seafoam

    sabrina seafoam Junior Member

    Joined:
    May 26, 2020
    11
    4
    0
    Location:
    Indiana
    Vehicle:
    2013 Prius
    Model:
    Base
    I never had any issues with my car but now the thing just won't go. My cheap code reader says poa7 inverter performance . Low voltage battery is 12.4 when car is off. for a couple days it said cooling was low for hybrid then it went into limp mode. The cooling fan does not run either. All the lights are on on the dash .
    any advice will be most appreciated.
    Thanks
     
    #1 sabrina seafoam, May 26, 2020
  2. pjksr02

    pjksr02 Active Member

    Joined:
    Nov 2, 2009
    532
    225
    2
    Location:
    Connecticut
    Vehicle:
    2010 Prius
    Model:
    III
    Sounds like the 12-Volt battery may be bad. Does the voltage drop after the accumulator pump runs, prior to starting? How old is it?

    How many miles are on your car? Are there any recalls that need to be done?
     
    #2 pjksr02, May 26, 2020
    Last edited: May 26, 2020
  3. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,169
    50,604
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    welcome!
    is that the ipm module code?

    check the inverter cooling pump.

    how many miles on her?
     
    #3 bisco, May 26, 2020
  4. sabrina seafoam

    sabrina seafoam Junior Member

    Joined:
    May 26, 2020
    11
    4
    0
    Location:
    Indiana
    Vehicle:
    2013 Prius
    Model:
    Base
    Thanks guys,
    She's a 2013 just over 100k . Went down in a sharp curve and the wife limped home. When I checked the oil it barely reached the stick.
    I got a cheap autel reader. I ordered the FIXD module but was not available from walmart. Is there another reader I should get? I did a reset where I pulled the big fuse disconnected battery and pulled the white wire off the panel under the hood. Now it won't start the motor or go in drive. I tried to get the cover off the inverter last night but got stuck on the big white plastic clip and went to supper.
    Thanks for your help.
     
    #4 sabrina seafoam, May 27, 2020
  5. sam spade 2

    sam spade 2 Senior Member

    Joined:
    Mar 31, 2018
    7,035
    2,792
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    12.4 is marginal. Would be interesting to see what it reads in "accessory" mode........but you might as well shop for a new battery.
     
    #5 sam spade 2, May 27, 2020
  6. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    57,964
    39,991
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Might be clogged hybrid battery fan; that's often the case with that warning. Could be 12 volt ailing too, though 12.4 isn't terrible.

    If you're game to DIY, watch @NutzAboutBolts on cleaning the fan. There's a pinned thread at top of this forum with a link.

    You can avoid pulling the rear seat bottom off though: there's one bolt (12 mm socket size IIRC) that needs to be removed, just below the air intake grill. You can reach it with maybe a 6" and 3" extension and a ratchet wrench. You need to push apart the seat bottom and back to reach through, but it's fairly easy. Just be careful to not drop the bolt.
     
    #6 Mendel Leisk, May 27, 2020
    NutzAboutBolts likes this.
  7. sabrina seafoam

    sabrina seafoam Junior Member

    Joined:
    May 26, 2020
    11
    4
    0
    Location:
    Indiana
    Vehicle:
    2013 Prius
    Model:
    Base
    Thanks I checked voltage and turned it on went down to 11.4 so its off to the store for a 200.00 battery
     
    #7 sabrina seafoam, May 27, 2020
  8. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,169
    50,604
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    tech stream on amazon is the prius gold standard
     
    #8 bisco, May 27, 2020
  9. sabrina seafoam

    sabrina seafoam Junior Member

    Joined:
    May 26, 2020
    11
    4
    0
    Location:
    Indiana
    Vehicle:
    2013 Prius
    Model:
    Base
    Thanks i will order techstream I replaced the battery now it runs but has code poa97
     
    #9 sabrina seafoam, May 29, 2020
  10. sabrina seafoam

    sabrina seafoam Junior Member

    Joined:
    May 26, 2020
    11
    4
    0
    Location:
    Indiana
    Vehicle:
    2013 Prius
    Model:
    Base
    sorry! Was P0A94
     
    #10 sabrina seafoam, May 29, 2020
  11. sabrina seafoam

    sabrina seafoam Junior Member

    Joined:
    May 26, 2020
    11
    4
    0
    Location:
    Indiana
    Vehicle:
    2013 Prius
    Model:
    Base
    After replacing the 12v my code changed to the P0A94 DC converter. I saw mention of expanded warranty and called my original dealer about it. He researched and since I knew P0A94 he said my ipm warranty was extended till 2028 I got an apt monday am for a free replacement. Normally 3k. Thanks guys great community support
     
    #11 sabrina seafoam, May 29, 2020
    pjksr02, bisco, Robert Holt and 1 other person like this.
  12. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    111,169
    50,604
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    congrats!(y)
     
    #12 bisco, May 29, 2020
(You must log in or sign up to post here.)