P0AA6 help request

Here goes nothing. Quick backstory. 2008 Prius. Last summer my inverter pump went out and I replaced it but before it was replaced I had to drive an hour in very hot weather to get the vehicle home from Mexico.

Now I popped the P0AA6 code after a very short trip and couldn’t get the car in drive after I turned it off. Disconnected the battery. Reconnected. Was able to drive home but the code popped again about 30 minutes into the drive. Same process again and code popped again in 30 minutes and won’t let me go into drive. I tried a doorman test I found that told me to clear the code and put the car in accessory mode but not ready... let it sit... If code pops it has to deal with your traction battery. It didn’t.. step 2 was to turn the car on into ready mode and put it into neutral for 30 seconds. I did this and the code popped. The video says this is either a chassis connection or the power inverter. I did super stress my inverter so I was thinking this was a good first shot but I’m also reading a lot about transmissions going out. I can’t seem to find the specific code in my scan tool that says whether is battery, inverter, or transmission related. OBD fusion simply shows the code, Type-Powertrain, Status-Confirmed, ECU-Cruise Control. I can’t find the 536 code or 613 or whatever they were however. I did find the voltage for all modules in the traction battery and they are showing 15.3-15.6 for all which seems good. 12 volt battery is generally showing 12.9 dropping to 12.0 with headlight load. So I think batteries are good and I either need an inverter, transmission, or it’s just a connection.

I’m kinda lost as to where to go from here. I’m tempted to start with the inverter and just get it replaced but the transmission thing worries me. The inverter pump shows turbulence so I think I’m good there. I read somewhere the inverter and transmission is under warranty under 150k miles. Is this accurate? I’m barely over 100k miles. Any ideas? See attached for trouble code info. Thanks for any help guys!

 

Wow SFO that workup looks amazing. Does anyone know where I need to go in the OBD Fusion app to find the sub idea for the P0AA6? I couldn’t find them today when I was poking around the app but I’ll have to try again tomorrow. As of now I don’t know which subcodes are in there.

 

I have 526/612. Time to go through the workup. Does anyone recommend a megohmmeter under $100 I do I need to go big to get these tests done? Looking on amazon there’s a huge range and I’m not sure which one to get.

 

Also if anyone could recommend some gloves.