There is an engine oil pressure indicator light on your car's dashboard. For the engine to operate reliably, it is necessary that the engine's lubrication system is constantly provided with sufficiently high pressure.
Attention! If the oil pressure drop warning light comes on while the engine is running and continues to light at high speed, this is an alarming sign. You must stop immediately, stop the engine and find out the cause. Further operation of the engine with low oil pressure can lead to serious damage and large financial costs for repairs.
Checking the lubrication system
1. Open the hood. Don't rush to check the engine oil level right away - let it drain into the oil pan, this will take two to three minutes. During this time, carefully inspect the engine - are there any fresh oil leaks on it?.
2. Look under the front of the car to see if the engine oil pan is punctured or leaking.
3. If an oil leak is detected from a punctured oil pan, try to temporarily seal it on the spot. You can use a car inner tube, a piece of rubber, a rag, a wooden plug, etc.
4 Pay special attention to the oil filter. Oil may leak from under the rubber filter seal if it is damaged or the filter is not secured properly.
5. If oil is leaking from under the oil filter, sometimes it is enough to turn it a little clockwise.
Warning: Hot engine parts can cause burns, so wear gloves and long sleeves.
6. Remove the dipstick, wipe it with a clean cloth and reinsert it. Remove the dipstick again and check the oil level. The level should be between the MIN and MAX marks.
Is the oil level normal?
Yes: see point 9.
7. Add oil to the required level; for this you can use a funnel from the neck of a plastic bottle.
Start the engine.
Has the oil pressure drop light gone out?
No: see point 9.
8. Have a nice trip!
9. Check the serviceability of the oil pressure sensor. To do this, unscrew the standard oil pressure sensor and install a mechanical pressure gauge in its place.
The original is available on the online resource [VAZbook]
Pressure at normal idle speed is more than 0.06 MPa (0.65 kgf/cm²) and increases with increasing speed?
No: see point 11.
10. Replace the faulty sensor and check its electrical circuit.
11. If after eliminating all visible causes the oil pressure in the engine is insufficient (oil pressure drop light is on), contact a car service center for engine diagnostics and repair.
Warning! Do not try to drive to the garage - you will ruin the engine. Tow the car to the repair shop with the engine not running.