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Long time Prius owner, new to using Priuschat: Code POA9B

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by [email protected], Oct 31, 2014.

  1. raybatt2222@sbcglobal.net

    [email protected] Junior Member

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    Hello and thanks in advance for any help/suggestions. My first Prius, an 05 has 249K and performs pretty much flawlessly. My second, an 04 which I purchased in May, has 75K. While driving the 04 yesterday, all the lights came on the dash and really scared me. I immediately pulled off the road and checked belt, fluids and anything else I could. I then called the dealer and they thought since the car was running normal, to bring it in. For a hundred dollars I was told the HV battery, though working and not a problem, would have to be replaced due to a faulty "battery temp sensor" and that this part is not repairable....I need a new battery! For $3,800.00! Anyone who has had this problem, or knows about it, please help! Tomorrow I am taking the rear panel out and check the HV battery fan, etc. Can I drive the car with these lights on? Everything seems to work but the CC.
     
  2. bisco

    bisco cookie crumbler

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    i think you're fine. you have a lot of options regarding warranty, rebuilt and etc., in the meantime, driving it shouldn't be a problem. why not get a second opinion from a hybrid specialist like luscious garage?
     
  3. raybatt2222@sbcglobal.net

    [email protected] Junior Member

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    Thanks for info...live near Detroit, however. I think out of warranty (8 years in Michigan, even tho only 75K) Thanks again
     
  4. bisco

    bisco cookie crumbler

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    are you close to steve at autobeyours?
     
  5. raybatt2222@sbcglobal.net

    [email protected] Junior Member

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    Not sure where autobeyours is....will google. Thanks again.
     
  6. bisco

    bisco cookie crumbler

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    scottsburg indiana.
     
  7. Patrick Wong

    Patrick Wong DIY Enthusiast

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    jdcollins5 likes this.
  8. raybatt2222@sbcglobal.net

    [email protected] Junior Member

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    Thank you!

    I am looking all over the net and seem to see ECU for gen I, not II. Can I do this myself (pretty good with a wrench)? Any "how to" greatly appreciated. With only 75K I really want to keep my battery, if possible. Thanks again.
     
  9. bisco

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    i think patrick is spot on. you should be able to do it yourself. pm 3 prong paul from patricks link, he's a great guy and might be able to hook you up.
     
  10. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Yes, you certainly can DIY if you observe safety precautions associated with high voltages/high current. You can obtain factory repair manual info at techinfo.toyota.com

    Open up the traction battery case, get the part number of the traction battery ECU, and look on eBay. You can probably buy a used unit for ~$100. For example:
    2005 09 Toyoa Prius Battery Control Module ECU | eBay

    autobeyours.com is another excellent source of used 2G parts.
     
    theforceprius likes this.