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P0A7A and P0A08

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Spencer13, Nov 16, 2024 at 12:02 PM.

  1. Spencer13

    Spencer13 New Member

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    I just replaced my hybrid battery with a new OEM battery. When I powered up the car, these codes came up. I cleared them initially, but they came back after about 30 miles. Any idea what is causing them? The car seems to be functioning fine and these codes weren't there before replacing the battery.
     

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    #1 Spencer13, Nov 16, 2024 at 12:02 PM
  2. Tombukt2

    Tombukt2 Senior Member

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    Are all plugs connected and tight confirmed in the back and the battery and right around the battery sitting it ready what are you measure across your 12 volt or across your red jump point and a ground up front 13.5 to 14.5 volts? That DC to DC converter is malfunctioning That's what charges the 12 volt so I'm just wondering if in fact you are not charging the 12 volt.? So that would be one of the first things I would check with that code like that and then the other one is going to take some deeper investigating unless that is set because of the DC to DC inverter problem which I guess may be possible but it looks like your DC to DC converter is malfunctioned has a problem or is kaput I believe that's on the bottom of the Gen 2 inverter It hell to get out and get off. Usually I just change the hole inverter I've got generally plenty of spares these are really stout this is kind of a rare issue when it happens it just happens I guess I haven't had this problem bunch of people here have.
     
    #2 Tombukt2, Nov 16, 2024 at 4:16 PM
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