[Banebane]

Have problem with bmw 318i e91 2010
Sometimes when driving and when I stop on trafici light
I have red light oil I change oil pressure sensor but nothing
When i turn off engine and restart car red light for oil stoped
The car is working perfectly no strange sounds no nothing
I was on service and oil pressure is perfect compesion is fine
but problem are still there sometimes I drive 100 km sometimes
200 km when light is up
Are anyone have same problem and how to solve

Sorry for my english

[PhaceN52]

I don't know the N43 but aside from the oil pressure sensor it seems it has an oil pressure control solenoid/valve, part 11417584990, is that clogged/dirty/functional? Any codes stored in the dme?

[Gemini562]

it could be something with the oil pump acting up intermittently. I'd say get the electricals checked next, and maybe see if there's a software update for your car that might clear this up

[NZE90]

If you can't find any other cause, there is probably a few broken pieces of the timing chain guides in the sump which eventually get sucked into the oil pickup tube when the engine is running and block it. Quite a common problem on the 4 cylinders.

When you turn the engine off the broken pieces of the timing chain guides fall away from the pickup, and when you start the engine again, the oil light goes out, just as you are describing. If i were you i would NOT drive the car anymore until it is fixed. You will be killing your engine.