Right above the oil filter.
UNDER HOOD, CENTER, UPPER ENGINE AREA, MOUNTED IN FRONT OF ENGINE BLOCK.
The oil pressure sensor on a gas engine is on the back of the block next to the distributor.The oil pressure sensor on a gas engine is on the back of the block next to the distributor.
Back of the block, have to remove the intake to get at it. Right beside the camshaft position sensor.
The oil pressure sending unit is located on the back of the block. it is the sensor located closest to the alternator.
If it has a computer it is the knock sensor.
on most cars, they are screwed into the engine block on either side of the engine . Don't get it confused with the camshaft sensor, which is usually screwed into the cylinder heads, or the tempeture-sending sensor, which is usually located on the top of the engine block.
On the 1995 Saturn SL1 The oil pressure sending unit is the sensor closest to the alternator. The unit is on the back of the block.
It is on the back of the block to the right of the oil pressure sending unit, if you are looking from the front of the engine to the back of the engine.
Engine Oil Rifle Pressure Sensor 1 is located on the left side of the engine block, about 1/3 way to the back.
The original answer is incorrect. The low oil level sensor is located where the original answer states. The oil pressure sending unit is a separate part. The sending unit is located on the left rear top of the engine, behind the intake manifold mounted into the top of the block.
Most likely the problem is with the Pressure Sensor in the engine block.
Follow the main hose that goes from radiator to engine block. It is on engine block between the main hose connected to engine block and a pullye. The heat gauge wire is snapped on the sensor. Remove the wire and replace the sensor.