Here is a post of note to all those out there. First off it would appear that there is no camshaft positioning sensor on a Fiat Florino 1.4 petrol engine. This is despite Fiat Italy saying there is and giving a part number for the anti knock sensor.
Having used a mechanic who is not a module changer but a good old fashioned mechanic (a real gem). He eventually zeroed in on a single tappet which had gone out of kilter. This had caused the other sensors to identify a problem and shut down the fuel injector and then put the engine occasionally into limp mode. It is clear now that other garages had tried to clear the fault by replacing various parts and failed at great cost to resolve the issue.
As was stated to me by the mechanic and another interested party how many engines had been written off by garages for the zero cost of parts and a lack of knowledge.
Beware of the simple things.
One happy Florino owner.