Code P0520-00, where is the engine oil pressure sensor and wire located?

Hi, I bought this car at auction for my teenage son. It is throwing a P0520-00 EOP switch circuit code. I did notice there was a single white with black stripe wire coming from a sensor under the front exhaust manifold that got cut coming up into the engine compartment. I can't find the other end where it connected to in the wire loom. I don't have any spark so I'm wondering if this could be the reason why. I also had a crankshaft position sensor that was out, and when I pulled the old one out it had decent mechanical damage on the end of the sensor, replaced with new.