Hi,
If the pressure drops to nothing, you normally will hear a ticking or knocking from the engine. If that isn't the case, it sounds like the oil pressure sensor is bad.
Oftentimes, they leak into the connector plug. This allows the pressure to appear low.
If you wanted, you could confirm oil pressure using a mechanical gauge. Basically, you remove the electric sensor and screw in an adapter that goes to a mechanical gauge. Start the engine and see if the pressure is truly low. However, if you don't want to try that, check the sensor for leaks. Also, disconnect the connector and inspect it as well for oil
I attached a picture below showing the sensor location. It is up and to the right of the oil filter. Simply disconnect the connector and using a deep well socket (some require a special oil switch socket) unscrew it from the engine and replace it.
Let me know if this helps or if you have other questions.
Take care,
Joe
See pic below.
Image (Click to make bigger)
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Thursday, March 17th, 2022 AT 7:55 PM