Subcodes with Bluetooth OBD Reader?

P0AA6 is triggered by an HV leakage current. It is usually in the battery, but finding the leakage path requires visual inspection of the battery internals (corrosion/fluid leaks). The use of a "megger" (a very sensitive ohmmeter) to detect small currents can diagnose where the current path, but that requires a talented technician.

You need an app on your Phone or computer tablet that will show detailed battery data or subcodes. DRPius on android will show battery data in detail to see your battery health. The Official Toyota diagnostic software will show the subcodes but it is expensive unless you are willing to use a hacked version.

 

I could suggest searching the forums for Gen 2 Prius PID definitions that can be loaded into a ScanGauge II, Torque or similar phone apps, etc. There was a start on some common place and format for those but it never got really taken up past the collection for Gen 1. For Gen 2, Gen 3, and beyond, if you can find the PID definitions you will probably find them in something like a .xls file attached to some thread in some forum here.

In the collection for Gen 1, I see somebody did successfully find the PIDs for five INF codes slots (probably vincent1449p, who did a lot of that work). If you can find Gen 2 PIDs for them, you're probably in business, as long as whatever app you are using with your OBD reader lets you define custom PIDs.

 

How did you get the Techstream software? I've been looking online but every website makes it seem very convoluted.