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P0A7F (and a bunch of other codes)

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Kevin Lester, Jun 15, 2024.

  1. Kevin Lester

    Kevin Lester Junior Member

    Joined:
    Mar 30, 2013
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    Vehicle:
    2005 Prius
    Model:
    N/A
    Looking for help - my red triangle is back!

    2005 Prius with 330k.

    Story so far:
    So, about six weeks ago, we got the dreaded P0A80 - it turned out to be our hybrid pack. I took it to a local who refurbishes a pack for us in the past, he replaced 3 of the cells, reconditioned the whole pack, and we were back on the road (yay!).

    Then, last week we got the triangle again. This time, it turned out to be a blown inverter coolant pump - I replaced the pump, and we were back on the road - no lingering codes, etc.

    Whole diagnosing the pump, I had the 12v tested twice and it was coming up fine - I recharged it as well to top it off (it didn't take much).

    Then, I just got the triangle again tonight. Torque showed the P0A7F code.

    But, I have a new code reader (the AP200) that can read deeper than my BAFX/Torque app can, so I grabbed it, and did a full scan, and it's giving me a whole bunch of stuff...

    -2 AC system codes (B1421, B1433)
    -1 Battery code (the P0A7F)
    -1 Hybrid System code (P3000)
    -6 codes for "ABS/VSC/TRAC" (C1241, C1242, C1256, C1300, C1310, C1357)

    That's a lot of codes.

    Anyone know what I'm likely looking at, here? Many separate problems, or, one major problem causing a lot of faults through the system? (I'm guessing: my hybrid battery pack being bad?)

    Any advice would be appreciated, as always.

    I verified that the new inverter pump is working (lots of action in the hoses/reservoir)

    If I can post images, I'll post some screen shots of the data from the scan, in case it's helpful... Screenshot_20240614-212917.png Screenshot_20240614-212917.png Screenshot_20240614-211444.png Screenshot_20240614-211544.png Screenshot_20240614-211559.png Screenshot_20240614-211605.png Screenshot_20240614-211758.png Screenshot_20240614-211804.png Screenshot_20240614-211813.png Screenshot_20240614-211852.png Screenshot_20240614-211957.png Screenshot_20240614-212003.png Screenshot_20240614-212048.png Screenshot_20240614-212054.png Screenshot_20240614-212917.png Screenshot_20240614-211444.png Screenshot_20240614-211544.png Screenshot_20240614-211559.png Screenshot_20240614-211605.png Screenshot_20240614-211758.png Screenshot_20240614-211804.png Screenshot_20240614-211813.png Screenshot_20240614-211852.png Screenshot_20240614-211957.png Screenshot_20240614-212003.png Screenshot_20240614-212048.png Screenshot_20240614-212054.png
     
  2. ChapmanF

    ChapmanF Senior Member

    Joined:
    Mar 30, 2008
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    Location:
    Indiana, USA
    Vehicle:
    2010 Prius
    Model:
    IV
    More than just one thing, but not as many as there are codes. :)

    Don't sweat the B1421. You can read what it means here. B1433 you can look up at your leisure when you haven't got other issues more pressing than A/C.

    P3000 is because you have P0A7F, and C1310 is because you have P3000. So the P0A7F is the thing to focus on there.

    C1241 you can also read about here. It's worth following up, but could indicate a 12 V battery issue or a wiring/connector issue and not something more serious with the brakes.

    The remaining brake system codes are worth following up on to see what's going on there, probably not related to the P0A7F.
     
    Brian1954 likes this.