1. The site is migrating to a new server this week, so there will likely be some downtime during that process. You can follow along here for updates.

Gen 2 HV Battery ECU Fault Codes Replacement Help

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Ghostpaw, Jul 25, 2019.

Tags:
  1. Ghostpaw

    Ghostpaw New Member

    Joined:
    Jul 25, 2019
    2
    0
    0
    Location:
    IL
    Vehicle:
    2006 Prius
    Model:
    N/A
    Hi guys, long time reader, first post. Two separate mechanics, one being the dealer told me my battery was throwing faults and needs replacement, dealer said the ECU is bad too. I was hoping I could post the codes to confirm what I need to replace, and maybe you could tell me the best third party choices for replacement. The dealer quoted me way too much, obviously.

    P0420
    P0A78
    P3000
    P0A80
    P3014
    P3015

    They want to replace the HV battery, HV battery cooling fan filter, HV ECU and Cats. I don’t really care about cats, I just want confirmation that I do need those pets, and as I had said, reputable manufacturers of those parts outside of Toyota, if there is any.
     
    #1 Ghostpaw, Jul 25, 2019
  2. Ghostpaw

    Ghostpaw New Member

    Joined:
    Jul 25, 2019
    2
    0
    0
    Location:
    IL
    Vehicle:
    2006 Prius
    Model:
    N/A
    Parts, not pets. I’ll fix in a minute.
     
    #2 Ghostpaw, Jul 25, 2019
  3. AlexY

    AlexY Member

    Joined:
    Oct 18, 2010
    160
    45
    1
    Location:
    UK
    Vehicle:
    2006 Prius
    Model:
    N/A
    Replace or fix (if you can) HV battery first. Battery fault can result in inverter fault code when inverter itself is fine. Code P0420 can be result of something stupid like faulty collector gasket or basically hole between engine and CAT. I will be surprised if CAT itself is gone.
     
    #3 AlexY, Jul 27, 2019
(You must log in or sign up to post here.)
Loading...
Similar Threads - Battery Fault Codes
  1. gwydion_black

    2007 Gen2 Prius ongoing nightmare - Problem w/ P mechanism - HV code P3102

    gwydion_black, Aug 9, 2023, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    6
    Views:
    687
    mr_guy_mann
    Aug 13, 2023
  2. Patio

    '08 Prius P0AA6 hybrid battery isolation fault in battery and ecm

    Patio, Jul 24, 2023, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    21
    Views:
    1,004
    dolj
    Aug 29, 2023
  3. Lighthouse-Beacon

    Help With Next Move: Code P0AA6 and Subcode 612

    Lighthouse-Beacon, Oct 24, 2018, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    25
    Views:
    11,054
    mr_guy_mann
    Sep 14, 2023
  4. fotomoto

    My P0A080 fault code and battery rebuild

    fotomoto, Jul 5, 2016, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    65
    Views:
    25,987
    JC91006
    Jan 23, 2019
  5. Robinbjerke

    Main Battery trouble after period of disuse

    Robinbjerke, Jun 14, 2016, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    9
    Views:
    2,121
    TMR-JWAP
    Jun 9, 2019