Oil warning light problem

[Potatopete]

Hi all.
I was driving home this afternoon and the 'oil min' warning light appeared on my dash.
When I got home I checked the oil level, which was low, so I topped it up with about a litre.
The problem now is that the warning message still appears on the dash.
I don't know if I need to do something to reset it. I suspect that it should go away by itself.
Any ideas?

It's a 2001 A4 2.0 with 156,000 miles.

 

[Ovid]

You sure its not oil pressure min and its oil pickup blocked, very common fault!

 

[Potatopete]

Thanks for the reply.
It was the 'oil low' warning, in yellow, and not the oil pressure warning, which I believe is a red warning light.

The oil was very low, so I topped it up to the max mark, but was worried that the warning didn't go out. However, 2 days later, it did. So it's all good!

 

[Mike_B]

Sensors have been know to fail - worth keeping an eye on the level manually for a while. That said, they seem to fail as "low oil" rather than just stop working. There are people who have over-filled as a result.

 

[sumo]

Does your bonet show open on the dash? If not it won't reset the oil light.

 

[Potatopete]

Does your bonet show open on the dash? If not it won't reset the oil light.

Ah, right, I didn't realise this.
Every day's a school day, as they say! Specially with this car!

 

[sumo]

Happy to help