PowerMac G5 Error Codes?

Thanks In advance to everyone. I have a Late 2005 G5 Dual 1.8Ghz 6gigs of Ram, Lacie firewire 400 Pci card, internal 4 port sata Card, ATI XT800 MAc video card running tiger(10.4.11). I noticed the Machine acting very sluggish the other day, My first thought was the Memory maybe there are some bad DIMMS, After a restarted things where ok again. Right Away ran memtest, came up with no issues(I know it did'nt test all the memory) But I thought this was a good start. But so far been ok. I then ran hardware test twice at 5Min and 30 sec error Code on Logic Board (Error code 2PFW/3.10: FW) This Looks Like a FireWire Error I think but Im thinking this a memory problem, Some bad Dimms. Does anyone know what this error code is? Thanks for Looking