Diagnosing bad battery assembly

So I’ve got a gen 3 2010 Prius with 190k miles. Purchased not running. Last owner said he had it diagnosed and it had a bad battery. I identified 3 bad cells. Replaced them and did a 3 cycle balance with Prolong System. The cells seem to be ok, coper plates are clean and wires have continuity.
when I put it all back in I got the code
P0B4C
Hybrid Battery Voltage Sensor "D" Circuit Low
1. Battery smart unit
2. HV battery assembly
I figured the battery control module was bad so I replaced it and got the code
P0B5B
Hybrid Battery Voltage Sensor "G" Circuit Low
1. Battery smart unit
2. HV battery assembly
Not sure where to turn my attention next. Any advice on this?