low oil light?

[richard head]

It's on but the dipstick reads full. Any theories?

[PushroD]

Most likely cause is a defective oil level switch in the oil pan.

They're not that expensive, but you'll have to drain the engine oil from the pan to remove it. I'd wait until your next oil change, and then replace it. It should be mounted near the starter, with a two pin electrical connector, on the passenger side of the oil pan, if I recall.

There's a possibility the float from the sensor may have broken off in the oil pan, and is floating around in there.

I wouldn't worry about it, it's plastic, it isn't going anywhere in there, and it won't hurt anything.

Should fix your problem.