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p0a80 p3000 - delta soc 39%

Discussion in 'Gen 2 Prius Technical Discussion' started by danielz000, Aug 19, 2023.

  1. danielz000

    danielz000 Junior Member

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    Hi all,

    My dad's Prius gen 2 threw a tantrum today.

    I plugged in tech steam and saw the following errors: p0a80 p3000

    I did a bit of googling and saw that the fan can be an issue... I took it out and cleaned it but it didn't look too bad... I also gave the riveted in air filter a little clean.

    I cleared the error codes and drove the car a bit and they haven't reappeared.

    Looking at the tech stream data delta soc was either 29 or 39% (I can't remember which but it didn't seem to change at all). The live data for the battery modules was jumping around a lot during driving (expected) but I never saw a variance of more than 0.3v between min and max modules.

    Any thoughts on what might have caused these error codes or how I could diagnose the problem if they reoccur?

    I've also reset the mpg to see if there's any major changes.

    For reference, it's a 2005 Prius with 120000 miles on the clock. About 5 years back I changed two battery modules and balanced the entire pack and the car has been fine ever since until today.

    Thanks in advance for any advice!

    Cheers

    Dan
     
    #1 danielz000, Aug 19, 2023
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  2. bisco

    bisco cookie crumbler

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    #2 bisco, Aug 19, 2023
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  3. danielz000

    danielz000 Junior Member

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    No mate. I'll do that next. Thanks.
     
    #3 danielz000, Aug 20, 2023
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  4. mr_guy_mann

    mr_guy_mann Senior Member

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    When you look at the codes in Techstream, do you see a little snowflake icon? If that's there then click on it (that's freezeframe data). That will give a snapshot of data that the ecu saw when it set the code.

    P0A80 sets when the battery ecu "sees" too much variation in block voltages for too long. So you should monitor the blocks while someone else drives the car -moderate and heavy accel and decel.

    Techstream has a function that can record and save live data. Use it and record a "movie", then review the data and see what it's doing.

    Posted via the PriusChat mobile app.
     
    #4 mr_guy_mann, Aug 20, 2023
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  5. danielz000

    danielz000 Junior Member

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    Cheers Mr Guy Mann.

    I didn't notice the snowflake icon but if it occurs again i'll look for it.

    Unfortunately I only realised I can record data at about midnight when I was about to pack up for the night. Next time I'll give that a try too.

    I've just had a couple of emails back and forth from nexcell/project lithium guys. If the shipping to the UK isn't crazy I'm edging towards ordering one of them, realistically, these batteries are 18 years old now, they can't have much life left in them.
     
    #5 danielz000, Aug 20, 2023
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