HP DL 160 G6 memory error

Has anyone seen this error before. 

CRITICAL : Power Module (DC-to-DC) 6 P1V5_DDR3_CPU2: 1.37 CRITICAL : Power Module (DC-to-DC) 3 P1V5_DDR3_CPU1: 1.37 - Server: HP ProLiant DL160 G6 s/n: USE138N4QH

It's we have Vsphere installed on these boxes and it is cloggin up my mail!

I think it has to do with memory voltage but these servers ran well for an extreme amount of time.

Thanks!