same problem
Had the same problem with my 2002 it was the screen on the oil filter in the pan. The dip stick tube crumbled and some of the plastic had fallen into the oil and stuck to the screen. If I was doing about 20 to 25 it was ok but above that the oil light and alarm would come on. Had it taken care of but problem would come back. Long story short ended up having to replace the engine because cam shaft locked up and couldn't be sure that the engine wasn't damaged too.
Had the same problem with my 2002 it was the screen on the oil filter in the pan. The dip stick tube crumbled and some of the plastic had fallen into the oil and stuck to the screen. If I was doing about 20 to 25 it was ok but above that the oil light and alarm would come on. Had it taken care of but problem would come back. Long story short ended up having to replace the engine because cam shaft locked up and couldn't be sure that the engine wasn't damaged too.