HybridBatteryRepair

Your P3056 code relates to the sensors on each of the 15 battery blocks ( 30 cells total ) Would appear they are snapped/ open and the car can not see all the voltages. Most likely corrosion in the wiring harness, and/or the battery ecu due to this corrosion traveling down the harness Inverter malfunction may be a cooling issue, check the pump change the coolant

It was myself that rectified the issue for John. Apologies in advance if this post is not allowed, I did try to find wording which either excluded or included trade If someone could confirm please then I can post more details Thanks, Fraser