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Prius Sudden Rev issue

Discussion in 'Gen 2 Prius Technical Discussion' started by Randy B, Feb 6, 2012.

  1. Randy B

    Randy B Member

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    2005 Prius
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    Four
    I have a Prius 2005 with an Enginer 4kwh kit installed [v4 bms]. Lately, I have experienced several instances where the Prius suddenly looses much of it's traction power and the engine races, and the red triangle and engine service lights go on at the dashboard. This happens with the kit turned on, and often after a few kit on/off cycles to get more ev mode. The Prius battery is sometimes low, sometimes not, when this happens. Not sure if it also occurs with the kit off.
    The Prius seems to retain some traction power up-down by the throttle pedal, but most power goes missing. On the other hand the engine races and does not seem to power the wheels or vary by throttle. When I pull off the road using brakes normally, and turn off the car/engine and restart [kit now off], the car seems to reset and can resume driving normally, but the error code lights [triangle-engine] lights stay on.
    Anyone have ideas as to cause and remedy?
    Randy B
     
    #1 Randy B, Feb 6, 2012
  2. Randy B

    Randy B Member

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    Further posting, I had the error code read and reset. Code = P0A92. Any ideas?
     
    #2 Randy B, Feb 8, 2012
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Could be the transaxle, inverter, battery current sensor - or some issue with your aftermarket system.
     
    #3 Patrick Wong, Feb 8, 2012
  4. dan2l

    dan2l 2014 Prius v wagon

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    Hi Randy,
    Your converter is probably set too high. Go to your installer and get it measured and adjusted. This is a known issue with the Enginer PHEV system.

    Thanks,
    Dan
     
    #4 dan2l, Feb 8, 2012
    1 person likes this.
  5. swing

    swing Junior Member

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    Randy - did you ever resolve your loss of power issue? Patrick - where exactly IS the battery current sensor located in a Gen 2?
     
    #5 swing, Dec 20, 2018
  6. Skibob

    Skibob Senior Member

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    Randy has not been here for 2 years and 9 months. I doubt you are going to get an answer
     
    #6 Skibob, Dec 20, 2018
  7. swing

    swing Junior Member

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    scoundrel!!
     
    #7 swing, Dec 20, 2018
    bisco and Skibob like this.
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