its a prius. take it in,
lost of things to go wrong with any hybrid, due to huge complexity.
if serious DIY, and feel compelled to get shocked on HV?
then read the FSM buy it ran read all the pages on 3000
and on how not to get shocked and killed. do so , dont guess
study the book.
or go there, first google hit for 3000, read this ?
could it not just be, that you didnt follow the battery swap instructions
in the FSM then trip these/
reset them and see if they come back.
P3004 - Power Cable Malfunction
HV Battery Malfunction. When HV battery voltage becomes lower than inverter voltage
Power Cable Malfunction. When main fuse is blown out, service plug is disconnected or limiter resistance is cut off
HV Battery Malfunction. When inverter voltage sensor is malfunctioning or limiter resistance value increases