2005 transaxle replaced now code P0AA6-524613

There's a tip for getting better information in searches: the second position in a trouble is never anything but digit 0, 1, 2, or 3. It's never a letter O, so if you search for P0AA6 instead of P0AA6, you get more useful info.

613 does indicate an electrical isolation problem in the transaxle area.



The area includes the orange wiring between the inverter and the transaxle, and a little of the inverter itself. It might be possible that the transaxle replacement was done sloppily and there is some easier-to-correct problem that's not in the replacement transaxle itself. But anyway, someone would have to make tests and find out, and that should be someone with the tools (such as a megger), protective wear, and knowledge to do the testing safely.

 

Here is the workup for DTC P0AA6 (aka P3009) : https://attachments.priuschat.com/attachment-files/2018/04/145252_2006_Prius_RM_-_P0AA6.pdf

 

P3009 was the code used in the Gen 1 Prius to mean the same thing, because back then SAE hadn't yet assigned a code in the standardized P0 space to mean that. In Gen 2 and later, Toyota has used the SAE standard P0AA6 code.

 

In this case, think of it as HV leaking into an area that wouldn't normally expect to see such, which then throws a DTC for an 'isolation fault'.