Have a Disco 3 with a couple of suspension leaks.
Have been isolation various parts by disconnecting and fitting isolating valves
The last one was to isolate the reservoir as this is known to corrode at the top so vented the pressure using Gap iid.
Once eliminated and pipes reconnected had this fault will not clear
C1A00-53 (AF) Control module - System programming failure - deactivated.
Now compressor will not come on and special functions not working.

If you google the fault it comes up with this. DISCO3.CO.UK - View topic - Suspension Compressor - changed but car broken!
Admittedly he said he changed compressor.
I also cant find that in what I have as a list of faults, although C1A0 search brings many up which on the whole say "not rising as expected" maybe emptying the reservoir it needs time to fill. Did you start and have all doors closed so it tried to raise and couldn't?

J

Hi

did u reactivate the EAS system using the gap iid as the suspension ECU needs to be told to turn back on

ur also easily know if the EAS system is deactivated as the lights on the rise/ lower switch won’t be illuminated , once the system is working again ur see the red light

Hope that helps