this car has 2 codes which wont clear p 1471 variable intake butterfly stuck close. p 1472 " " " " open. when you switch the engine off the valve keeps opening and closeing for about 5 mins then stops I have checked the ecu for water damage but alls dry there.I belive the ecu stays powered up for about 5mins after switching off, the agents have not had this before and this the second time I have had my head under the bonnet of one of these so I dont know a lot about them. ray