diagnostic error

Getting a code warning but dont know what it is

ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:40
ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:41
ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:42
ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:42
ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:42
ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:43
ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:48
ENG SID 251 50 Power Supply Invalid Data 7/28/17 16:48ENG SID 251 50 Power Supply