Join Date: May 2014
Location: N. Central Florida
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My guess is that with 140K miles it might not be unusual to need a CAT replacement.
Two things though:
I see it is complaining about low battery voltage too.......and a low/weak 12 V battery can give erroneous failure indications on ALL KINDS of other things that really aren't bad. So I suggest that you first test or replace the 12 V battery and check the charging voltage.
Then, if it ends up that you do need a CAT, do some shopping around.
I think you should be able to find one from a 3rd party company for half of what Toyota wants.....or even less maybe.
P.S. If you disconnect the battery and clear the codes, don't think you can run right in and get it tested.
The system logs that recent reset and sometimes you have to drive it a month or a thousand miles to allow for a good test.
'17 Prius C-4
Last edited by Easy Rider; 09-26-2016 at 01:44 PM.