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Oxygen sensor incomplete for smog check

Discussion in 'Gen 2 Prius Main Forum' started by Cockroach777, Dec 12, 2020.

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  1. Cockroach777

    Cockroach777 New Member

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    2007 Prius
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    hey all,

    I just changed my 12V battery on my 2007 prius. I drove for around 100 miles in order to finish the drive cycle, everything shows complete but not oxygen sensor.
    Does anyone have the same problem and know how to fix it?

    thanks
     
    #1 Cockroach777, Dec 12, 2020
  2. dolj

    dolj Senior Member

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    You may need to do a few more drive cycles, (the number of miles is not important) in order to complete the O2 piece of the puzzle.
     
    #2 dolj, Dec 13, 2020
  3. ChapmanF

    ChapmanF Senior Member

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    If other ideas fail, check in the repair manual (more info). It sometimes gives details of the exact driving pattern that is needed to complete a particular monitor. Some of them are kind of finicky and you could drive a long time before you happen hit all the elements to complete it.
     
    #3 ChapmanF, Dec 13, 2020
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