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P0078 and P0092 codes

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by dan2l, Jan 13, 2012.

  1. dan2l

    dan2l 2014 Prius v wagon

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    Had a shutdown with error codes P0078 and P0092 on the scan gauge. Reset the codes with a scangauge and the car goes drives fine. This has not repeated for a couple of days but I was wondering where to see a list of Gen2 codes so that I can better understand what happened.

    Thanks,
    Dan
     
    #1 dan2l, Jan 13, 2012
  2. seilerts

    seilerts Battery Curmudgeon

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    Dan, I can't find anything for 0078 or 0092. Could it have possibly been P0a78 and P0a92? Those are HV drive-motor performance codes -- possible related to too much current from your Enginer pack?
     
    #2 seilerts, Jan 13, 2012
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  3. dan2l

    dan2l 2014 Prius v wagon

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    Hi Seilerts,
    Yes, I am comming to that conclusion also.

    This came from an Enginer User that just installed a replacement converter. But his system indicates a max of 14.1a and 244v. Those levels should not throw codes unless the calibration is off on those readings.

    By the way I can make my 2005 shutdown for this problem if I use 2 converters, but I have only gotten the P9000 code on the scangauge. Maybe the 2005 did not talk as well to the scangauge.

    However, what I would really like to know is if someone can direct me to a list of codes so that I can keep that list in my file of information for the future.

    Thanks,
    Dan
     
    #3 dan2l, Jan 13, 2012
    1 person likes this.
  4. seilerts

    seilerts Battery Curmudgeon

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    hybrids.ru and selidori.com/tech/prius for download.

    Or, for the about same price as a 3 day subscription to TIS, you can get the Bentley manual from Amazon.
     
    #4 seilerts, Jan 13, 2012
    1 person likes this.
  5. Randy B

    Randy B Member

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    I got the P0A92 code a few times recently on my 2005 prius with Enginer kit [v4 bms]. driving with kit on and suddenly power decreases, engine races, and dash triangle and engine lights come on. Simple pull-over, car off, kit off, wait and restart clear the driving problem, but codes and lights remain.
    Any ideas what causes and how to avoid?
     
    #5 Randy B, Feb 8, 2012
  6. 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
     
    #6 dan2l, Feb 8, 2012
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