Code 46 - T2 IS GREATER THAN 85% OF BATTERY VOLTS DURING LOOK AHEAD TEST

Code 53 - 1REC FAILS TO TURN OFF DURING PLUG CYCLE

Google flight Systems and download the EV100 manual & fault codes for more info. I would be looking at PZ1 plug on the controller, it's the one with all the multi colored wires, bad connections here cause lots of issues, I normally reterminate all the wires and fit a new plug.