help (code p0A1d)

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by helpme1, Dec 31, 2020.

Tags:
  1. helpme1

    helpme1 New Member

    Joined:
    Dec 31, 2020
    1
    0
    0
    Location:
    SEAK
    Vehicle:
    2006 Prius
    Model:
    N/A
    after driving for about 15 miles with starts and stops, it started to have jerky acceleration, but not building up speed, eventually stopping completely. code was P0A1D. here are some pictures. suspected it was the 12v battery before we got the code, so we charged it, but that did not fix it Also live somewhere with no dealers, so probably will have to try to fix it ourselves.
     

    Attached Files:

    #1 helpme1, Dec 31, 2020
  2. TMR-JWAP

    TMR-JWAP Senior Member

    Joined:
    Aug 12, 2016
    3,755
    4,229
    0
    Location:
    Columbia, SC
    Vehicle:
    2007 Prius
    Model:
    Touring
    The P0A1D has dozens of subcodes, but they're mostly triggered by an internal malfunction of the HV ECU. A reasonable question to ask is whether your code reader is up to the task of accurately reading hybrid codes on a Prius. Many, many people have fallen victim to chasing their tails due to using code readers that aren't speaking hybrid language. And not just hybrid language, but Toyota Prius hybrid language.

    Here's a link to an online repair manual for the Gen 2. That code should be listed and explained in the section for Hybrid Vehicle Control. Minor description on page HV-43, more detail starts on page HV-60, with the actual DTC Guide starting on page HV-143

    Service Manuals - Google Drive
     
    #2 TMR-JWAP, Dec 31, 2020
    Last edited: Dec 31, 2020
    SFO likes this.
(You must log in or sign up to post here.)
Loading...
Similar Threads - help code p0A1d
  1. daley

    P0A90 and P0335 codes please help diagnosing

    daley, Dec 9, 2020, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    8
    Views:
    1,641
    daley
    Jan 10, 2021
  2. Cybervic

    P0A08 code help and hybrid health check questions.

    Cybervic, Dec 3, 2020, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    4
    Views:
    1,273
    Cybervic
    Dec 4, 2020
  3. MP3gee

    Ok need help here please (codes)

    MP3gee, Nov 11, 2020, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    1
    Views:
    427
    dolj
    Nov 12, 2020
  4. Bacon_Is_A_Pooper

    Timing chain replacement and other codes, parts lists or general info/help

    Bacon_Is_A_Pooper, Nov 3, 2020, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    10
    Views:
    1,735
    SFO
    Feb 2, 2021
  5. Kyle McDowell

    HELP! Possible bad transaxle?

    Kyle McDowell, Oct 9, 2020, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
    Replies:
    2
    Views:
    432
    edthefox5
    Oct 10, 2020