NEED HELP

I was drivin last night down a gravel road and a piece of gravel frew up a knocked my oil filter loose and i dented and i lost oil pressure i threw a trip code for the oil pressure and it died a couple miles down the road from where it happened. I changed the oil filter and put oil back in it. NOW it wont start back up cause the oil pressure sensor is still tripped. What i need to know is how to reset it so it will start. There is no other damaged parts so that is not the problem

Any help would be greatly appreceated.

Thanks,
Lance Wheeler