Thanks, that is all excellent stuff. After fiddling with the brake light switch, the cruise has stopped working, so it looks like I need one!

The only listing for a new pump was at £1400! For a pressure switch £424! These were not on LR or RR websites. S/H is much cheaper but quite variable!

Update. I have replaced the warning light bulbs for ABS, traction control and brake. They are all lit all the time, as I expected. I still can't find Rave. I now know that a Saab owner (with the same ABS system) had the same fault message when the plunger on the brake light switch was sticking...

No, I don't have Rave. Where would I get it? Do I keep hold of the plunger as I let the pedal up?

It was a Snap-On professional scanner. Are you saying that the fault might not be with the pressure switch at all? You think that if I hold the plunger out and let the pedal up, it will reset something in the ECU control unit?

My 2000 2.5 DSE Auto shows the above fault when scanned. It won't clear. The brakes work fine and the pump is working fine and stopping starting as it should. I'm not sure where to go from here. Is there a sensor on the pump or is it just the pressure switch? The switch is clearly working...

My 38A was bought quite cheaply and I'm gradually sorting out a few bugs. The only other Land Rover I've ever had was a Series 3 88 with a 2.5 Defender engine and that was 27 years ago. I'm a passable old mechanic but I'm bound to need some help. I do now!