Oil Level Sensor (2004-, Certain Markets And Models Only): Notes

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Oil Level Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

The oil level sensor provides the engine control module (ECM) with information about the quality and temperature of the engine oil and the oil level in the oil trough. Which of these functions is used by the sensor varies between different car models.

All three functions are combined in one unit with a sensor section and an electronics section. There are no moving parts in the sensor.

The sensor consists of:

a terminal with three pins
integrated electronics
2 capacitive gauge elements
a PTC resistor.

The oil level sensor is supplied with 5 V by the engine control module (ECM). The oil level sensor generates a PWM signal for the engine control module (ECM). Also see Oil level monitoring (2004-, certain markets and models only) .

The engine control module (ECM) can diagnose the functions of the oil level sensor. Also see Oil level sensor, diagnostics .

The pulse-width modulated (PWM) signal from the oil level sensor can be read using parameter readout.