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Engine does not shut down!

Discussion in 'Gen 2 Prius Technical Discussion' started by RM007FC, Aug 17, 2016.

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  1. RM007FC

    RM007FC New Member

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    My Gen 2 2006 Prius engine works continuously and does not shut down even when car is stopped and parked. It shuts down after pressing power button. Problem started after I changed oxygen sensor and then car was reset by computer, could these actions cause the problem? If someone knows what kind of problem is that and how to fix it please respond.
     
    #1 RM007FC, Aug 17, 2016
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Since the problem started after you performed a repair, it is reasonable to assume that repair caused the problem - unless more information is provided which would disprove that assumption.

    1. The Prius has an air/fuel ratio sensor which is located upstream from the catalytic converter.
    2. The Prius has an oxygen sensor which is located downstream from the catalytic converter.
    3. Which part was replaced, and did you install the correct Toyota part?
    4. If you replaced the A/F ratio sensor with an oxygen sensor, that certainly is the reason for your problem.
    5. What does "reset by computer" mean?
     
    #2 Patrick Wong, Aug 18, 2016
  3. RM007FC

    RM007FC New Member

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    Thank you for response. I Changed oxygen sensor, sensor between TWCs (see picture). Sensor i purchased on amazon:
    . I do not know exact meaning of RESET, but when check engine errors and all possible errors are erased by diagnostic tool we call it RESET. Today i am going to install old sensor and will see if it solve the problem. After replacement of oxygen sensor check engine did not disappear and diagnostic tool Showed Bank 1 Sensor 1 error. i think this is upstream sensor.
    Sc3RP.jpg IMG_20160817_165000.jpg
     
    #3 RM007FC, Aug 18, 2016
  4. RM007FC

    RM007FC New Member

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    We solved the problem :) One guy told me that sometimes this happens when you connect diagnostic tool, so we firstly cut off power supply from AC battery then cleaned Throttle and the problem was solved :)
     
    #4 RM007FC, Aug 18, 2016
  5. 'LectroFuel

    'LectroFuel Senior Member

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    Congrats on fixing this! At least the engine turned off when you press the button. My entire car wouldn't turn off. I had to unplug the 12V. I hope it didn't damage anything.
     
    #5 'LectroFuel, Aug 20, 2016
  6. RM007FC

    RM007FC New Member

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    Than you! In my case unplugging the battery did not damage anything, Audio system and everything works properly.
     
    #6 RM007FC, Aug 22, 2016
  7. Khardan

    Khardan New Member

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    My car also do not stop the ICE, so I will try to do the same. What do you mean by "cleaned Throttle"?
     
    #7 Khardan, Sep 15, 2017
  8. bisco

    bisco cookie crumbler

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    search 'throttle body cleaning'.
     
    #8 bisco, Sep 15, 2017
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