Low oil pressure warning light v36

[MFC05]

Hi all - I had the low oil pressure light come on my v36 and now  the warning light has disappeared. 
i have checked the oil dipstick there still plenty.

Any thoughts what it could be? 

Edited October 31, 2021 by MFC05

[GTSBoy]

Well, it was either a fault in the oil pressure switch, or you had low oil pressure.

Note that oil level in the sump and oil pressure are not necessarily correlated. There are other reasons for low oil pressure.

What was the gauge saying at the time?