My 2002 Camry has just over 199K miles. Today for the first time the oil light came on while driving. I checked the oil level and it was full. The engine sounds fine and power is good. I'm wondering if the light is due to a bad sensor or a bad oil pump.

 

I'd start with replacing oil pressure sensor, and you might as well have 2 of those, one on engine block and one next to filter. If you replace it, put some teflon tape on threads too.
The right thing to do, to rule out bad oil pump, is to have sensor removed, and test sensor connected, then run engine and check on oil pressure on gauge. if it's good - well, you have your answer.

 

ya its working that's an super answer it helped me thanks for the post....