Low engine oil warning

[_cesil_]

audi a3 '05 2L 140bhp
came up on the dash low engine oil - check oil level.
topped up with correct oil to mark on the dipstick, but the dash is still bringing up that its reading low engine oil level.

 

[etronic]

WWhen did you do last oil change? Sometimes you can get such info when oil is too sooty or someone was playing with service interval settings.