Hi i have a 2004 model ducato camper with a faulty instrument panel fuel gauge not working correctly does any body know of a repair for this problem

Hi
I remember somewhere somone else had this problem & fixed it by removing & refitting the wiring plugs on the back of the instrument cluster, let us know if it works
see how-to post - https://www.fiatforum.com/ducato/227251-instrument-cluster.html
If not I would try the same (remove /refit wiring plug) on the fuel gauge sensor connection in the tank - accessible through the cover in the floor.
cheers

tried doing that already with no joy