Hi everyone! I've got a ds4 1.6d 2012! When I turn ignition on the screen on dash says 'electrical circuit fault- get car repaired'. This then goes off but the service light stays on! I've just had the car serviced so it's not due! My mechanic friend put his computer on and it says code B1624! This code cannot be deleted and is an active fault! Has anyone else had this? Help!!!