Engine Warning Light - Electrical Fault

[MrT]

I recently had a fault on the Focus (Mk3) where my sons feet knocked off one of the connectors on the bottom of the fusebox which disabled the outside temperature gauge, bonnet closed sensor and several other bits. I reconnected the connector and all is working again except it has left the engine managment light on. Is there a simple way to clear this light without paying a dealer?

 

I have VAG-COM and an X-Two lead for the Galaxy but this does not like the Focus and whilst the OBD-II test detects the module it is not compatible. I don't want to buy similar for the Focus again just for a simple light reset.