Oil pressure light comes on oil runs down oil pressure sensor

Oil light is rather important it goes out if oil pressure is good comes on if oil pressure is low when it comes on damage is expected with continued operation like wearing of main bearings and pistons and cylinders can lead to a engine rebuild

The oil light comes on when the oil pressure sensor detects low oil pressure. The amount of oil has little to with it, although very low oil levels can cause loss of oil pressure. Since you aren't getting knocking, chances are the oil pressure sensor is defective. Replace it and monitor the situation closely. This could be a serious condition if allowed to escalated and it turns out to be an oil pressure issue.

Well, yes and no.
If the red oil pressure light comes on, yes the engine could stop running. You could actually lose oil pressure, or the switch could fail.
A "change oil" notice would not cause the engine to stop.

Don't run the engine with the oil light on. No oil pressure means no oil circulation, and damage will result. Have a shop check the oil pressure with a gauge that plugs into the oil pressure sensor port. If no pressure, check if you need a new oil pump.

Does the oil light come on BEFORE the engine shuts down? I have to ask because it is NORMAL for the oil light to be on when the engine is not running. I had a customer that said the same thing just last week. After we wasted a bunch of time (which the customer ended-up paying for) checking the oil level, the oil pressure, and verifying correct oil pressure gauge, light, and sending unit operation, it turned out that the crankshaft position sensor was bad and causing the engine to shut down and it had absolutely NOTHING to do with the oil light - it was functioning as designed.

If the oil light is coming on before the engine shuts down, the first thing you need to do is check your oil level. If the oil level is OK, you need to check the oil pressure with a gauge to determine if there is an actual engine oil pressure problem or if the oil pressure sending unit, gauge or light is malfunctioning. Also, it is highly advisable to not drive the vehicle AT ALL if the oil pressure light is coming on while driving until the cause of the light coming on has been determined and repairs have been made. Otherwise, SEVERE ENGINE DAMAGE may result.

How is the sensor connected to the engine? I had a 2000 model Pajero which did the same thing. It had to do with the way the sensor was connected to the engine, the hollow bolt they used was aftermarket and didn't let enough oil through to the sensor. So the oil has to warm up first before it can get through to the sensor.

Hi.check oil pressure with tester it can be bearings that went because of loss of oil pressure

Indication of wear within the engine. Most probably worn main bearings. First off, did you use the correct grade oil with the last oil change? If yes, get that engine out, have the crankshaft resized(entails grinding the journals to a slightly smaller diametre) and fit oversize crank bearings. While you're at it and the engine is out you may as well swop out the oil pump, saving you much time and money in the long run.

Oil pressure sensor blocked or faulty. both oil level sensor and oil pressure sensor activate the oil light. engine goes into safe mode and shuts off ignition.

oil pressure sensor = when oil light comes on = sensor is not recieving a high enough oil pressure. 1) Did you check the oil level in the engine? 2) if the oil level is fine, and it just had an oil change, the filter (filament style) might have been installed upside down. also does the light come on and beep only during first couyple seconds of being started or while driving down the road?