Scanning was done buy a mechanic who's having a garage at Athurugiriya (specialized in KIA and HYUNDAI) he said that issue can be sorted by replacing a Vail (which I don't have any clue about ).. which currently out of stock with them .. I showed the same issue to company where they directly suggest to do a engine overhaul which was estimated as 4 lacks ,,I'm surprised coz they didn't even bother to scan the vehicle prior to give that sort of comment ..