What is the sensor located under the oil pan of an Audi car?

[TeaganAnn]

Audi car oil pan below that sensor is the oil level sensor. The following is an introduction to the oil level sensor: 1. Introduction one: The oil level sensor detects the position or height of oil in a container by measuring the change in capacitance between the sensor housing and the sensing electrode caused by the oil entering the container, and converts this change into a current variation. 2. Introduction two: The working principle of the oil level sensor is that the sensing part of the capacitive oil level sensor is a coaxial container. When oil enters the container, it causes a change in capacitance between the sensor housing and the sensing electrode. This change is converted by the circuit and undergoes precise linear and temperature compensation, outputting a 4-20mA standard signal to the display instrument.