My hyundai verna crdi 1.6 2009 model had run 50000 km is now stopping while running. it happening while slowing down, and able to start also soon, once the check lit came up and we scanned and the technician said one of the fuel oil pressure sensor is malfunctioning, he had cleaned up the same and the problem still exist and asking to change the sensor which is causing 30k , what to do?