I have a 2002 car that won’t charge at all. Was working up to two days ago now nothing when plugged in, charger does not turn on. When I turn key on I get an error code -51. This code is not in the manual, like most of there error codes, found the code online and it says (motor controller voltage low electrical fault check voltage, see manual) manual was help. What does this mean and is this an ease fix, and if it is how do i fix this problem. Thanks.