Basic Function Of Engine Oil Pressure And Temperature Sensor - GF18.40-P-2004A

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Engine all (4xWD)

Engine all (CAR)

Engine oil pressure and temperature sensor, shown on engine M139.9

Courtesy of MERCEDES-BENZ USA

Overview

This document contains information on:

General
Function

General

The engine oil pressure and temperature sensor monitors the oil pressure and the temperature of the engine oil.

Function

A piezoresistive sensor element and electronics system for signal boosting and temperature compensation are integrated on a micromechanical chip. The pressure and temperature of the engine oil are routed via a connection fitting to the underside of the diaphragm of the sensor element, where it is measured. With the integration of the cap chip, the engine oil pressure and temperature sensor is used to measure absolute pressures. The engine oil pressure and temperature sensor sends the ascertained data to the combustion engine control unit.

Component description
Engine oil pressure and temperature sensor, component description	Engine 256 in model 223	GF18.40-P-4102A
	Engine 254 in model 206 Engine 654 in model 206	GF18.40-P-4102C