[terry_cunnane]

Thanks George and Matt for your replies.

The fact that I can cancel the fault codes without fixing anything makes me think that there is nothing mechanically wrong with the car. ( I'm not 100% sure of that. I would appreciate some guidance on that assumption)

So I think it seems to point to an electronic/electical fault.
I have checked various connectors and they seem sound.

However I will get hold of a replacement oil filler gasket now as it is letting some oil past it.

I look forward to any more suggestions.

Terry