MichaelRoger

Yes, of course you have, but how big the concern is what you need to determine. First, check the oil level in your engine when the car is parked on level ground and the engine as cold as possible. Top up with the correct grade of oil if necessary. If still flickering, get the car checked over at a garage. It could be something as simple as dodgy wiring or sensor, but could also be a sign that oil pressure is low owing to tired oil pump or worn engine.