Multiple systems in your car are designed to maintain the correct engine oil level and pressure. ... The oil pressure sensor is hooked directly to the oil pressure gauge on your instrument cluster. When lower than normal oil pressure is detected, the pressure sensor will make the gauge in the car reflect this change.
Fuel Pressure sensor
The fuel rail sensor, commonly referred to as the fuel pressure sensor, is an engine management component that is commonly found on diesel, and some gasoline injected vehicles. ... The sensor sends this signal to the computer, which then uses it to make adjustments to the vehicle's fuel and timing.