Car starts drives a bit then shuts off

Recently I had an oil change performed on my vehicle. Prior to taking my car in for the oil changed I performed a diagnostic on my car. The oil pressure sensor was what the diagnostic had showed as a problem. Took the car in for an oil change the next day while driving the car to work it stopped. Couldn’t restart the car I had to have it towed back to the mechanic where I had the oil change performed. The mechanic also ran saying that a diagnostic and the same issues showed up on his diagnostic.
He replaced the oil pressure sensor however the car yet continued to stop once it was turned on and driven for a small distance. The mechanic thought that Throttle body was the issue however it was not. The mechanic continued to do additional diagnostics and it continues to show that the oil pressure sensor is the problem however it has already been replaced. What is wrong with my car?