Its not the service light!! on the 2.00 DTI it relates to fault on either:
Imobaliser, if its running its not that.
Auto transmission fault if it is an auto box or something on the fuel side.
The most likely thing on the 2 DTI is the EGR valve located at the font of the engine, it gets gunged up with carbon and sticks causing the light to come on.
Easy fix!!
Clamp off the 2 small water pies leading in to it and remove pipes.
Remove the wiring plug from the end.
Then remove the two torx bolts holding it on and carefully remove unit.
You will see the plunger valve stem covered in hard carbon deposits.
Scrape off and clean in paraffin of similar, be very careful not to get any liquid into the plug socket.
Once cleaned refit and see if that has cured it.
This is a very common fault, iv done lots of these.
Hope that helps.
Allan
Allan
May 2007