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This is a discussion on Scangauge: Showing Codes That Start With Letter "U" within the Gen II Prius Care, Maintenance and Troubleshooting forums, part of the Gen II (2004-2009) Toyota Prius Forums category; Originally Posted by Aaron I think this is what is happening. But why isn't it affecting my Prius in a ...


Scangauge: Showing Codes That Start With Letter "U"

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Old 07-22-2008, 02:55 PM   #11
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Default Re: Scangauge: Showing Codes That Start With Letter "U"

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Originally Posted by Aaron View Post
I think this is what is happening. But why isn't it affecting my Prius in a bad way? It starts up fine.

It depends on the exact code. If you set a fault like in the image I attached above you would have all the fault lights set. If you are just setting low priority codes no lights will illuminate and you will not notice.

Communication faults are common on all makes, they do not always can an issue the consumer notices.
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Old 07-23-2008, 09:13 AM   #12
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Default Re: Scangauge: Showing Codes That Start With Letter "U"

Most if not all the listed U codes in the repair manual starts with U0, not U2 or U3 like aaron is seeing...
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Old 07-23-2008, 09:17 AM   #13
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Default Re: Scangauge: Showing Codes That Start With Letter "U"

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Most if not all the listed U codes in the repair manual starts with U0, not U2 or U3 like aaron is seeing...

We are also relying a generic interpretation of manufacturer specific communication codes. These types of codes are not standard or regulated to be standard. They vary by make and by year. I would guess scangauge is displaying them incorrectly.
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