1. Attachments are working again! Check out this thread for more details and to report any other bugs.

FOB Not Working & P0A1D, U0100, U0293

Discussion in 'Gen 2 Prius Main Forum' started by Tony Lucas, Oct 24, 2018.

Tags:
  1. Tony Lucas

    Tony Lucas Junior Member

    Joined:
    Jul 29, 2016
    26
    12
    0
    Location:
    Louisville
    Vehicle:
    2006 Prius
    Model:
    II
    Hellow Prius Friends. I've seen and fixed most of the Prius codes - but this is a new one. Nothing seems really wrong with the car, except I can't start the car with the push button. I have to put the FOB in the slot by the steering wheel. These are the error codes on my App - P0A1D, U0100, U0293
    Any ideas?
     
    #1 Tony Lucas, Oct 24, 2018
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,166
    50,061
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    fob battery? 12v?
     
    #2 bisco, Oct 24, 2018
    Tony Lucas likes this.
  3. Tony Lucas

    Tony Lucas Junior Member

    Joined:
    Jul 29, 2016
    26
    12
    0
    Location:
    Louisville
    Vehicle:
    2006 Prius
    Model:
    II
    The 12V could be the issue? So, look at the 12v and then re-read the codes? Should I re-charge the 12v?
     
    #3 Tony Lucas, Oct 24, 2018
  4. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,166
    50,061
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    how old is it? test it in the morning with a volt meter, then charge it if it is below 12.5
    if it won't hold, replace it
     
    #4 bisco, Oct 24, 2018
    Tony Lucas likes this.
  5. Tony Lucas

    Tony Lucas Junior Member

    Joined:
    Jul 29, 2016
    26
    12
    0
    Location:
    Louisville
    Vehicle:
    2006 Prius
    Model:
    II
    The car is 2006. The 12v is at least 5 years old. I'll recharge it. I tried looking at old posts - some talked about a computer, but there are so many computers on the car, I didn't know what to go after.
     
    #5 Tony Lucas, Oct 24, 2018
  6. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,166
    50,061
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    low hanging fruit. if it is not the 12v or fob battery, you will have to look up the codes in the service manual.
     
    #6 bisco, Oct 24, 2018
    Tony Lucas likes this.
  7. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    5,302
    4,241
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Do you have the associated INF(s) or subcode(s) for that thrown DTC P0A1D, there are over 20 INF's for this DTC.

    Knowing which INF (subcode) can help efficiently track down a problem. You may need access to a compatible OBD2 device to retrieve such.

    Here is the work up for DTC U0100 and DTC U0293:

    https://share.qclt.com/%E4%B8%B0%E7%94%B0%E6%99%AE%E7%91%9E%E6%96%AF%E5%8E%9F%E5%8E%82%E8%8B%B1%E6%96%87%E6%89%8B%E5%86%8Cpdf%E6%A0%BC%E5%BC%8F/Prius%20Service%20Manuals%202004/%E4%BF%AE%E7%90%86%E6%89%8B%E5%86%8C/04pruisr/05/20zmw/ciu0100.pdf
     
    #7 SFO, Oct 25, 2018
    Tony Lucas and Raytheeagle like this.
  8. Tony Lucas

    Tony Lucas Junior Member

    Joined:
    Jul 29, 2016
    26
    12
    0
    Location:
    Louisville
    Vehicle:
    2006 Prius
    Model:
    II
    I have Toyota Techstream on my computer, I'm assuming that will show an INF Subcode.
    What would be an example of the INF Subcode?
     
    #8 Tony Lucas, Oct 25, 2018
  9. SFO

    SFO Senior Member

    Joined:
    Feb 7, 2017
    5,302
    4,241
    0
    Location:
    Northern California
    Vehicle:
    2007 Prius
    Model:
    N/A
    Yes, techstream will work perfectly. INFs (subcodes) follow a three digit format, like "143".
    .
    Check in the scan results for an flower like icon between the 'Monitor Status' and the 'DTC' columns, click it.

    Below is an image with a DTC (P312F) circled in red, to the left of that is the icon you're looking for.

    [​IMG]
     
    #9 SFO, Oct 26, 2018
    Skibob likes this.
(You must log in or sign up to post here.)