-201 is pump motor encoder error, check wireing to encoder (bearing in motor) if good replace encoder. -31 is VNM high(traction master controller) check if 3 phases of motor are properly connected.Check motor houseing for short to frame. Check for excessive voltage to battery case(isolate battery from truck if possible). Possible fault in controller power section or bad diode in controller. Was the charger possibly plugged into the machine connector by accident? (that would be bad)