3.0 diesel faults

[lewisredfern001]

some of you may have seen my previous post about the selection of faults i have!!

well i have had a crypton pro scan fault reader on it today and have some info i would like some help with.

when i checked the engine management side of things i got two faults which will not clear:

engine management.
1.CAN communic:general faulty then after it says MEM
2.Main supply relay then after that it say MEM

now these fault arent what i expected to see as i have varied faults such as speedo, internal indicators, gearbox stuck in one gear (autobox) traction control light on, ABS light on.

do the above faults mean anything to anyone?

i could not get the fault machine to read in OBD mode it kept saying unable to connect to ECU. is it best to get OBD codes to really help with my faults?

thanks lewis