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Check Hybrid System, P0A0F / P2111

Discussion in 'Prius c Technical Discussion' started by Zradub, Sep 6, 2024 at 2:17 PM.

  1. Zradub

    Zradub Junior Member

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    My new to me 2016 102k mi C got this yesterday:


    Check Hybrid System, P0A0F / P2111

    is it the tb or it’s sensors or maybe a Maf or fuel pump?
     
    #1 Zradub, Sep 6, 2024 at 2:17 PM
  2. bisco

    bisco cookie crumbler

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    YES
     
    #2 bisco, Sep 6, 2024 at 4:03 PM
  3. ChapmanF

    ChapmanF Senior Member

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    It's not going to be MAF or fuel pump, or anything besides the throttle body, throttle position sensor, or the wires thereto.

    The code tells you the ECM wanted the throttle to close but did not see the position sensor showing it closing.
     
    #3 ChapmanF, Sep 6, 2024 at 4:10 PM
  4. Zradub

    Zradub Junior Member

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    So is first step to simply clean the throttle body? If that doesn’t work how do I test the TPS or TB itself?
     
    #4 Zradub, Sep 6, 2024 at 4:44 PM
  5. ChapmanF

    ChapmanF Senior Member

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    Cleaning the throttle body won't hurt, I guess, but might not lead directly to any insight into why it wasn't seen closing when the ECM wanted it to.

    A good scan tool should be able to pull up the freeze frame from when the P2111 code was set, and show just what the position sensor readings were at that moment. There may also be active tests where you can command a specific throttle position and see the position reading.

    There should be a whole recommended troubleshooting procedure in the section for P2111 in the repair manual:

    Toyota Service Information and Where To Find It | PriusChat
     
    #5 ChapmanF, Sep 6, 2024 at 4:56 PM
    Brian1954 likes this.
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