Hi Mike
check the 2 white plug connectors in each foot well they get green corrosion and stop coms to the EAS, ive just cut them out and soldered & heatshrinked - do one at a time as wire colors replicated in the plug and some bays have double wires
also look for corroded shunt from delay timer to wire to pin #1 eas ecu its under the carpet in a high traffic area the plastic wrap falls off putting a blob of soldered wires to bare floor
if you have a hard eas fault then its probably only autologic or testbook that will clear - you can buy from RSW eas unlock and do with a laptop its code based but easy
Im going through the same situation on my own p38 after doing above im leaning towards the driver module - as I just rebuilt the valve block with new o rings from rover rennovations
by all means PM me