I have an even stranger hicas problem.
Sometimes when driving and I come to a stop (like at the lights or in a traffic jam), then press the accelerator, I lose power steering for quarter of a second and the hicas light flashes quickly.
This ussualy only happens in the rain, or just after it rains.
I know there is a tiny leak in my boot, but I don't think it is letting water under the parcel shelf.
Greg.