P0300 Misfire

Discussion in 'Gen 2 Prius Technical Discussion' started by Jjherrera, Oct 6, 2021.

  1. Jjherrera

    Jjherrera New Member

    Joined:
    Mar 29, 2021
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    Location:
    Illinios
    Vehicle:
    2005 Prius
    Model:
    Two
    I am wondering if some one may shed some light on this issue.
    I am having a P0300, P0301,& P0303 code.
    I have replaced spark plugs , coils .
    Would a lose of worn timing chain throw those codes?
    I do notice some noise in the valve train at initial start up .
    it does not consume any oil.
    Run perfectly fine. Averages about 45 to 48 MPG
    all day long .

    has a new Cat, or would the 02B1S2 be no good. As I read 0.00 Volts in my freeze data.

    Before hand thank you for you help.
     
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