Before I fixed that car with replacing inverter I swap that print boards to check that you meant about current sensors, they are OK in both Inverters. Problem seems to be on the way to them. Manual tell as that that P1A2B is registered after is sensed 50 A different between them. BUT I also took them out from lines they sens and in that moment there is no any different and Code still in place. The missing power AC must by caused by lack of signal to main switches MOSFETS. One more when that code is registered car is in READY mod , if I move gear shaft to a D or R position warning light come ON and cut the RAEDY mod OFF.
To me looks like there is one more system that oversees problems before Main MOSFETS. I m going to dig deeper.