Multiple codes on new prius

Hello all, new to the forum and was recommended to ask here by several other prius owners:

Just picked up a 2005 Prius that had been sitting for a few months for a good deal, clean title and 195k miles with a brand new hybrid battery with dealer verified install paperwork. Only issue is it has the red triangle of death (exclamation light and VCS light) and was showing P0A08 and P0A09 codes. Drove it home 50 miles, car ran flawlessly with no issues. Figured the codes were related to the 12v battery after it had been sitting for a few months. Swapped the battery when I got it back to my house, codes did not clear and two new codes (P3190 and P3191) came on along with the CEL. Car has not failed to start up once, no idea what could be causing these. Again, car drove flawlessly on the way to my house. Any advice or possible next steps are greatly appreciated. All I've done so far is make sure it had gas in it and replace the 12v battery.