Looking for list of Trouble Code meanings

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by pairoPriuii, Oct 4, 2021.

  1. pairoPriuii

    pairoPriuii New Member

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    I'm trying to find a complete list of DTC meanings. POB080 and "Hybrid System Requires Attention" keep recurring. I'm looking a troubleshooting chart for all possible causes. Thanks
     
  2. ChapmanF

    ChapmanF Senior Member

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    Although it can seem like a "list of DTC meanings" is what you want, what you said next is much more what you really want:

    Yes, that's the key. Each DTC can only tell you there was something a computer in the car saw, and you will have to work through possible causes for why the computer could have seen that. That kind of troubleshooting usually takes up several pages for each DTC, which is why there's no simple "list" that will be worth your trouble.

    The thing that has all the DTCs with all of the several-page troubleshooting details you need is the Repair Manual, and we have a wiki page that Elektroingenieur kindly put together, where you may find several different ways you can access it.

    When you look up any given DTC in the manual, you will end up on a page with several things:

    • at the top of the page, you'll see the DTC itself and a terse, one-liner description, maybe with the name of some part in it. That's just the "fortune cookie" for the code; it's nearly useless, doesn't tell you enough to know what the code means. For that you need the rest of the section. Definitely avoid the temptation to see a part name in the fortune cookie and assume you just need to go buy that part. You need to troubleshoot to find what actually triggered the DTC.
    • next down the page, you'll see a description and a box showing the "detection condition" for the code. That tells you exactly what the computer in the car has to see to make it report that code. This is the information you need to start thinking out what possible issues could have made the computer see that.
    • the rest of the section, however many pages it goes on, will be suggested troubleshooting steps that will help you work through the possible causes.

    As you can see, if you ever found something like a "list of DTC meanings", it would probably be nothing but the fortune cookies, and as far as helping you troubleshoot, that wouldn't be worth the paper it's (not) printed on.

    If you have a mechanic shop and you run into the same DTCs on lots of cars over and over, the fortune cookies can start to be useful as little memory jogs, but only for as much as they remind you of the rest of what you know about that DTC, having looked it up enough times in the manual before.
     
  3. TMR-JWAP

    TMR-JWAP Senior Member

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  4. pairoPriuii

    pairoPriuii New Member

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    Thank you, sirs, for responding. At the risk of appearing even denser than I already must, I was not able to locate any links to an actual Repair Manual, aside from various subscriptions...is that the only way?
     
  5. ChapmanF

    ChapmanF Senior Member

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    When you look at the information Elektroingenieur gathered for that wiki page, you might pay special attention to the "Free Databases" section, especially if you have a borrower card from a public library.

    You probably also saw the "Unofficial Sources" section. It's not so easy to keep a stable list of those, because of course they are copyright infringing, and sometimes such links don't stay around very long, others spring up, and so on. But I've seen threads where people have found them.

    It's good to at least know how to find the non-bootleg ones, either from TIS for the small fee, or through a library, whatever, just because the unofficial ones aren't always complete and less often up to date. The official online ones do get updates and error corrections and whole new sections added by Toyota from time to time, even for older models. Sometimes you'll have a question and the answer just won't seem to be in the copied-off-the-web version you might be looking in.
     
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