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Plugin noise and check engine light?

Discussion in 'Gen 3 Prius Main Forum' started by rondocap, Dec 31, 2012.

  1. rondocap

    rondocap Member

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    So my 2012 plugin was parked for about 3 days, and when I turned it on, heard loud knocking and the check engine light came and stayed on.

    When switching the car on or off, I'll hear two taps/ticks that were not there before. Loud knocking is not there now.

    What can the issue be? It was very cold and snowing.
     
    #1 rondocap, Dec 31, 2012
  2. xliderider

    xliderider Senior Member

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    Did you look under the hood for any dead animals that may have taken shelter there?

    Lol, other than that, I hope you don't have a serious mechanical problem.
     
    #2 xliderider, Dec 31, 2012
  3. bisco

    bisco cookie crumbler

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    where are you located? how cold was it?
     
    #3 bisco, Dec 31, 2012
  4. rondocap

    rondocap Member

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    Nj, maybe went down to 20 F?
     
    #4 rondocap, Dec 31, 2012
  5. bisco

    bisco cookie crumbler

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    i was thinking the 'knock on cold startup', but i don't think that sets the engine light off or leaves permanent sounds. does it drive okay otherwise?
     
    #5 bisco, Dec 31, 2012
  6. rondocap

    rondocap Member

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    Yeah it was ok.
     
    #6 rondocap, Dec 31, 2012
  7. rondocap

    rondocap Member

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    What do you think it could be?
     
    #7 rondocap, Dec 31, 2012
  8. rondocap

    rondocap Member

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    I checked codes, and got P0301 cyl 1 misfire.

    Is it a on time thing? Or should I not erase the code and bring it to toyota?
     
    #8 rondocap, Jan 1, 2013
  9. spiderman

    spiderman wretched

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    Classic case of the ICE knock. First time I heard of a PIP having the problem. Be sure to report it to your dealer. Did you clear the code?

    Most of us victims never get a code... you did, congratulations. :)
     
    #9 spiderman, Jan 1, 2013
  10. rondocap

    rondocap Member

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    I did not clear the code, should I bother taking it in? Or will the car function normally if I clear it and it doesn't come back?
     
    #10 rondocap, Jan 1, 2013
  11. rondocap

    rondocap Member

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    #11 rondocap, Jan 1, 2013
  12. spiderman

    spiderman wretched

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    Oh yeah, leave the code and take it in. Yes the 10-11-12s are all having the problems. I had the IM replaced and have not had the knock since but others have since replacement. Apparently it is not a total fix.
     
    #12 spiderman, Jan 1, 2013
  13. rondocap

    rondocap Member

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    I drove it longer today until a warm up cycle was completed, and the light went off automatically.

    I think what caused it was moving the car while cold for a few minutes.
     
    #13 rondocap, Jan 1, 2013
  14. spiderman

    spiderman wretched

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    The code will remain until cleared. I would still recomend takinh it in and having it documented.
     
    #14 spiderman, Jan 1, 2013
  15. F8L

    F8L Protecting Habitat & AG Lands

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    That is what causes it for most of it.
     
    #15 F8L, Jan 1, 2013
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