02 cummins no oil pressure
 

Hey yall. I was commin home from work and the check gauge light came on and chimed. Checked my gauges and NO oil pressure at all. Pulled over and checked the oil. Was a little low but not below the add. Topped the oil off and started it up gauge went to about 30 and then after about 30sec it dropps to 0 again. Any suggestions thanks

My guess is the sender for the gauge is on it way out or the connector to it is loose any codes pop up?