Why does the oil light come on even after topping my car up with oil?

The oil light on my 2010 Skoda Octavia comes on, even though I've topped it up with oil. What could the issue be?

Asked on 7 December 2017 by Jason

Answered by Honest John
That would tell me that the oil pump is not delivering enough pressure either because it is failing or the oil sump strainer is blocked, or that the engine is so worn the oil pump cannot create sufficient pressure.
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