Oil Pressure warning issues
 

I have a 2007 Audi A4 2.0T. Recently I have had an issue arise where my "Oil Pressure" warning light comes on when the engine reaches 2k RPM. I replaced the oil filter still the warning appeared. Tested the oil pressure switch and that was bad so I replaced it. Interestingly enough I still get the warning light. Tested the switch again and the new one was fine, checked the screen on the pump in the oil pan and it is clear. I finally gave up and took it to the dealership and they tested the pressure and the oil pressure is good. The switch is good, filter good, pump good, they checked the wiring that's good too. SO! Where the heck is this warning light coming from? The Dealer says, "it may be the instrument cluster is bad and is not reading the signal correctly." Just wondering with anybody else thinks. I don't want to drop a ton of money into an instrument cluster if that's not the issue.

If the dealership tested your oil pressure and is ok, you don't have any problems.
What I'd do is replace the pressure sending unit. It'll run you under $20.00