2016 Prius C4 no MG2 operation, ICE on 100%

2016 Prius C, 1,600 miles



Codes:

(HV ECU) POB60



ABS: C1203, C1345

(HV) C1259, C1310



Unfortunately no way to get deep three digit sub-codes at this time.

Any Possible or more likely reasons for the POB60 would be most appreciated.

Even better would be a game plan to correct the P0B60 issue.



Symptoms:

ICE on constantly (100% of time) NO MG2 power! No electric drive power! HV battery takes charges from ICE and MG2 (regen braking) and holds charge perfectly (80%) and tops off (~100%) on long downhill braking, AC runs strong forever, HV and 12v cooling fans work perfectly and clean, 600 of those 1500 miles are only powered by the ICE with the AC on, flawless performance of course at 1/2 the HP.. 12v battery in great shape after sitting, in Acc mode and while running all textbook voltages., 30 mile highway trips no problem . Many warning lights on, EV and Eco modes non-functional, throws four diag codes one of which is P0B60-123 which involves the HV battery smart unit. The HV battery holds charge great and accepts charge perfectly. MAybe a communication problem with the MG2?

Any diagnostics/characteristics I should be looking for in diagnosing this problem?

Basic steps to probe further? Possible problems?

Zero MG2 (electric drive power) being used, gas mileage 25-29 MPG (very low).

Help me get the MG2 motor operational!



EV and Eco functions not operable, 26 MPG city 30MPG Hwy (typical ICE pattern where as hybrid should be better in city and worse on the hwy) , ICE always running, very sluggish acceleration though will travel at 80MPH, ICE revs with mild acceleration, no hybrid synergy power transfer animation action on dash, no electric motor operation (acceleration) when accelerating from standstill, it's all ICE.
Regen braking charges HV battery very well (MG2 does this) so MG2 does operate as a generator moving electrons into the inverter/converter. But there seems to be no drive power going to the MG2. Of course this is all observed and somewhat subjective.

hybrid synergy drive malfunction stop car warning flashes on LCD, triangle lit up, brake abs warning lights on, several other warning lights on.