Dredded pa092 error on 2005 prius

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by UKCLASSICPRIUS, Feb 2, 2012.

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  1. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    So I have a 2005 prius... & that with a pa092 error code...

    (toyota also suggested needing a battery aswell BUT as a previous classic owner, I have fixed battery issues before, & after inspection it looks fine to me...)

    I was about to change the transaxal with one that I have bought hereafter, BUT am now having second thoughts about fitting it, & now thinking more about the invertor assembly...

    I have tried to search for common issues, not cant make up my mind what to do...

    I have nothing to loose, so I may aswell, & chuck in an inverter assembly after aswell if it needs be...

    BUT I understand the car has a tsb on its inverter pump, & that its not working (as in pumping fluids through the bottleneck visible via bubbles)

    I will ASAP check the battery charge sensor in the HV battery housing & can only WISH to check under the inverter cover for resistance at the three main points, with a megohmeter (that I dont own..)

    what do you prius owners think I should do?

    Has anyone got any history and experiance with this pa092 error?

    Please shed some light on this topic, thanks in advance....
     
    #1 UKCLASSICPRIUS, Feb 2, 2012
  2. andyprius

    andyprius Senior Member

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    Get your car to the dealer ASAP and get that free new inverter coolant pump and new coolant. Make sure they bleed the pump also.
     
    #2 andyprius, Feb 2, 2012
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  3. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    the thing is its not driving, when it was at the dealers, they suggested sorting it out 1st then doing the tsb... as they could'nt get it started so they said...

    BUT the cars starts fine with me.... just with alot of xmass tree lights on the dash..., LOL & no ability to drive atall, espacially reverse, which makes me think it is the transaxal.... as with my classic prius the symptoms are the same...
     
    #3 UKCLASSICPRIUS, Feb 2, 2012
  4. andyprius

    andyprius Senior Member

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    I presume you tried disconnecting the 12V for a few minutes to get rid of Xmas tree lights? (rebooting)
     
    #4 andyprius, Feb 3, 2012
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  5. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    Oh hell yeah.... even tried with my obd scanner, as it reads all p0a codes & erases them too...
     
    #5 UKCLASSICPRIUS, Feb 3, 2012
  6. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    I just wacked up an inverter on ebay with 90 warranty.... for well under £200

    BUT after, I realised its from a too new of a vehicle... 2007

    mines a 2005

    the different part numbers available for toyota prius synergy drive unit inverter:

    2004 - g9200-47100 - G9200-47120? current model?

    do you guys know if it will be compatible? mines a late 2005 model, the one I picked up is from a 2007?

    What are the differences in the part numbers please if anyone knows? are they compatible with each other?
     
    #6 UKCLASSICPRIUS, Feb 6, 2012
  7. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    according to this guys advert (ebay item number: 290548681516) they fitt through 2004 to 2007?

    What do you recon?
     
    #7 UKCLASSICPRIUS, Feb 6, 2012
  8. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    and these were the codes I got from toyota:

    C1259 Hv system regenerative malfunction
    C1310 Hv system malfunction
    P0A92 Hybrid generator performance
     
    #8 UKCLASSICPRIUS, Feb 6, 2012
  9. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    #9 UKCLASSICPRIUS, Feb 6, 2012
  10. seilerts

    seilerts Battery Curmudgeon

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    The most recent part number is G920047121. It will fit. It is better to have the 47120 than the 47100.
     
    #10 seilerts, Feb 6, 2012
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  11. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    I got itchy fingers & started sending offers, LOL!!! I got a result though....

    Hopefully its from one of the latter models....

    I will let you know as & when it arrives....
     
    #11 UKCLASSICPRIUS, Feb 6, 2012
  12. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    The inverter arrived today, & I confirm its the most recent part number being:

    G9200-47121

    With the P0a92 code, would you suggest me replacing the inverter assembly, & giving it a shot before I fitt the transaxal?

    I have both, but would save time & money...

    I definantly suspect mg2 though.... as the cause...
     
    #12 UKCLASSICPRIUS, Feb 8, 2012
  13. seilerts

    seilerts Battery Curmudgeon

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    The inverter is a ~2 hour job for a technician, 3-4 if you are doing it. If it is the inverter, then you will save some money on the much bigger transaxle job. If it is the trans, then perhaps you can sell the old inverter to offset the cost of trying it first. It would be important to my own sanity to know where the problem was.
     
    #13 seilerts, Feb 8, 2012
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  14. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    The latest is that I have had the transaxal put in, will try it with the old inverter 1st, if any issues, will fall back on the newer inverter...

    I have yet to BUY the WS fluid, pain in the butt in the uk, tryed halfords they dont have an equivalent, will try toyota, But the last time I needed some they would not even tell me what it was called...

    So monday is going to be an interesting day, & thats when I will turn her over to see if all is well... Wish me luck...
     
    #14 UKCLASSICPRIUS, Feb 18, 2012
  15. edthefox5

    edthefox5 Senior Member

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    As fas as trans fluid any Dextron 4 fluid will work fine. There is nothing very special in WS other than its a rather thin viscosity (sae 10) to help with fuel economy. In the USA there are many WS alternatives.
     
    #15 edthefox5, Feb 18, 2012
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  16. seilerts

    seilerts Battery Curmudgeon

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    Ed, I'm inclined to agree with you, but how do you explain the poor UOA (high copper? don't remember) for AMSOil that someone reported?
     
    #16 seilerts, Feb 19, 2012
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  17. cwerdna

    cwerdna Senior Member

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    #17 cwerdna, Feb 19, 2012
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  18. Britprius

    Britprius Senior Member

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    Redline D4 or D6 is available in motorist shops in the UK AND is fine in the Prius According to posts with UOA's on PC.
     
    #18 Britprius, Feb 19, 2012
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  19. UKCLASSICPRIUS

    UKCLASSICPRIUS Member

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    I tried halfords they kept me waiting on the phone for 20 mins before saying I need to read my cars usermanual, LOL!!! when I told them to start of with that I need a toyota WS equivalant...

    Really want it tommorow, dont want to wait for it to come from another branch etc...

    Wish me luck...
     
    #19 UKCLASSICPRIUS, Feb 19, 2012
  20. edthefox5

    edthefox5 Senior Member

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    Thanks Cwerdna for answering Seilerts. It was Bob who was running that Amsoil version. I googled the hell out of that stuff back then and found a tech article that said that particular Amsoil tended to attack copper.

    Alot of us here are running Redline D6 or D4. Redline now recommends D4 for the Gen II as maybe there D6 may be too thin a viscosity. Although if you ask Dave at Redline Tech he said D6 will work fine. I have been running D6 for about 40,000 miles and the car runs great and have also done a UOA on D6 in my car with no ill wear indicators. But really any Dex 4 fluid will work fine to get you going short of that Amsoil version.

    There's not alot of special fluid needs in our gearbox.
    No clutches, no torque converter. Just a chain and gears in the planetary, and bearings. Just needs a very good GL4 lubricant.
     
    #20 edthefox5, Feb 19, 2012
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