Oil Sensor Light

My 2002 A4 1.8T recently started displaying an oil sensor warning light on the message panel. The manual only explaines oil pressure and oil min warnings. I couldn't find any information on the oil sensor. Does anyone know how to fix this (besides taking it back to the dealer)? The fuse that breaks the oil sensor circuit is fine. Where is the oil sensor located? Any help would be great! Thanks.

Is it the oil pressure light? and what kind of oil was it that was put in it last? the 1.8T engine is very sensitive as to what oil gets put in.

Let us know what you find.
-Brad

What does the light look like ?