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P0138 Code Appeared After Installing New Hybrid Battery

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by illuminato, Mar 3, 2024.

  1. illuminato

    illuminato Junior Member

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    Hello everyone,

    My mechanic recently installed a new battery in my 2006 Prius, and about a week later, I encountered the engine check light along with the P0138 trouble code (Oxygen sensor circuit high voltage). I'm wondering if it's possible that something went wrong during the battery installation, or if these issues are unrelated.

    Could the installation process have caused any issues, or are these problems likely independent of each other?

    Thank you for your help!
     
    #1 illuminato, Mar 3, 2024
  2. TMR-JWAP

    TMR-JWAP Senior Member

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    My first guess: About as much chance as installing a headlight bulb would make your rear tire fall off.

    But, are you confident that error code is being read correctly?

    Here's a link to a previous discussion/troubleshooting guide. Maybe just a relay?

    Help trouble shooting P0138 | PriusChat
     
    #2 TMR-JWAP, Mar 3, 2024
    Last edited: Mar 3, 2024
  3. illuminato

    illuminato Junior Member

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    Yes, the error code was read correctly
     
    #3 illuminato, Mar 4, 2024
  4. illuminato

    illuminato Junior Member

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    How bad it would be if I continue driving with that error?
     
    #4 illuminato, Mar 7, 2024
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