fault codes

had the disco plugged in today to see what shes doing had a "number" of faults pop up...as follows...
6 air flow circuit
20 air flow circuit
44 egr vacum modulator short circuit
45 temp gauge short circuit
54egr open load
59 A/c clutch drive open load fault
79 A/c clutch drive open load fault
96 road speed missing fault
136 injector 2 open circuit fault
137 injector 3 open circuit fault
138 injector 4 open circuit fault
139 njector 5open circuit fault

reset em went on a good run only ones that came back were the a/c ones...but i dont have A/C???? nice guy only charged £30, checked MAF and used all snap on kit had graffs galore going on, seems to have cleared my juddering/shuddering but still have a weird drone noise around 1500rpm.... but very happy

from the ones i that mean any thing i would say if they arnt ancient fault codes.
1/ your injector harness is failing hence the injector faults.

2/ Air flow meter is failing ( poor performance maybe )

the others are spurious faults wich are common cruise control faults even if the car doesnt have it is another one.

also what was the flow rate of the air flow????

noise at 1500rpm is it like a whistle??? ie brocken exhaust manifold studs????