Can't remember the code but when they looked it up it said the engine was running lean.
Look at this:
http://www.fordwiki.co.uk/index.php?title=Rough_Running_(Split_Hose)_-_Mondeo_ST220
The pipe is right at the back of the engine, if you put your hand down there you'll probably feel air being sucked in.
With mine it was trying to suck the mechanics glove off!
Ta will check this out