P0B3D [0x0B3D] Check Hybrid System

I got 3 codes on my 2012 Prius:

• P0B3D [0x0B3D] Hybrid battery voltage sensor A - circuit low
• C1259 [0x5259]
• C1310 [0x5310]

The car can drive but it does not engage the electric motor at all. It does not charge the hybrid battery at all either. The car says "Check Hybrid System Stop The Vehicle In A Safe Place". I checked all the battery packs with the obd scanner and they are all reading within the correct range. Checked the auxillary battery and the battery tester said it was good. People are saying that it could be a possible corrosion on the battery control board but not sure how to test for that.