Intermittent Oil light at cold start

I too have had this issue. It doesn't seem to be pressure related - if you run the engine for a minute & ref it, the indicator stays on. However, if you turn the key off & restart immediately, the indicator light goes out. I suspect the oil pressure sener switch is the culprit. This part is less than $20, so I plan to start there. I'll let you know if that fixes the problem.

your oil level may be low, your oil sensor may be faulty, or your may have a leak