Ducati Pro1 plus Manuel D'utilisation page 6

Function Fault:
Fault Code
E.1
E-accelerator fault
E.2 Battery voltage over 42V
E.3
Battery voltage below 32V
Output Current exceeds 14A
E.4
E.5
Motor Hall wire fault
E.6
Motor stuck
E.7
Motor phase line fault
E.8
Brake failure
Instruction