Well, it's not the sensor either, new one arrived the other day which I fitted, and still the same. So I was scratching my head.....
I rang Paul (CitroenXM) about another matter, and during the course of the conversation, Paul wondered

if the bracket that holds the sensor had been moved

not even having thought of this

I'm off out this morning to have a play, I don't have a set of ramp, however, a phone call to my 'old fella' soon remedied that and they are sat on the drive as we speak. This of course means the first job is to put the kettle on.............
In other news, there could soon be an addition to the fleet, and no, it's not the ZX, I can't seem to pin the lad down with that, so I have my eye on something with a 'little' more oomph........... and no, I'm not saying yet, before you all ask

all I will say is that the vehicle has the seal of approval from the Bank Manager (read SWMBO).
