Thx Nixoro, it does make sense

TBH my donor car is identical (my old Omega) except for bring about 6 months older. So I was hoping to get away with getting the newer one sorted at a reasonable cost. That was the plan...hehe

My problem lies in the fact that when it comes to cars I am a complete Noob! so please excuse any further stupid questions that I may post....but I will look to see if there is a previous post first ofc.

Ok, so now I have another question.....It has come up with the error code and I have identified it as the Cam sensor. If I now replace with a new one, will the logged fault still restrict the engine to limp mode until I get it to a garage and get it cleared? or will it clear the fault but log it as a past error?
The reason I ask is that I live about 20 miles from the nearest place that has a diagnostic set and currently have no tax on the car.

If anyone can advise me on this I would be most greatfull 

Ok, so if I were to fit a new or donor Cam sensor..... this would mean that I would still have the fault light on until it cleared after 20 sucessful starts etc...but would the "limp" mode (restricted revs) still kick in until it cleared? or would it mean that the light would stay on and it would run ok?

I only ask so that I would know if I sucessfully changed the sensor.

Thx, that makes things clear