Help (16C1)Throwing code P0AC2

Discussion in 'Prius c Technical Discussion' started by JackiStardust, Feb 15, 2026.

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  1. JackiStardust

    JackiStardust New Member

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    2016 priusC 1. check hybrid battery alert and check engine light are on. Code p0ac2.

    Looked up the code and wondering how exactly I could check to see if the sensor module on the side of the hybrid battery is bad. We took all the covers off and checked all wires and connectors and nothing is corroded. Is there something else I should be looking for ? Idk anything about hybrids unfortunately and can't afford a mechanic right now.
     
    #1 JackiStardust, Feb 15, 2026
  2. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    That's not a common error code, doubt you're going to hear much from DIYers.

    Get a subscription to the official repair manual. That's only about $20 to get started, and you'll have access to the real-deal troubleshooting steps for that situation, same as a hired mechanic.

    This link has information on subscribing.

    Good luck!
     
    #2 Leadfoot J. McCoalroller, Feb 16, 2026
  3. ChapmanF

    ChapmanF Senior Member

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    There should be around five pages of troubleshooting info for that code, judging by the gen 3 liftback repair manual, which is probably similar.
     
    #3 ChapmanF, Feb 16, 2026
  4. Stretchnuttss

    Stretchnuttss New Member

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    Anyone ever have this issue after a head job
     

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    #4 Stretchnuttss, Feb 26, 2026 at 7:38 PM
  5. Brian1954

    Brian1954 Senior Member

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    What year and mileage is your Prius c?

    How long did the car sit unused?
     
    #5 Brian1954, Feb 26, 2026 at 9:21 PM
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