What Is A Map Sensor

Map stands for manifold absolute pressure, and the map sensor’s job is to monitor the air that flows into the engine. Your vehicle’s map sensor actually has nothing to do with maps or navigation. The map sensor in your vehicle has nothing to do with maps or navigation.

Map sensors are set to zero from the factory. Then, it translates this pressure into a voltage signal that the sensor feeds to the power control module (pcm), your car's computer. With the car off and the key on, the map sensor will read zero at.

A manifold absolute pressure (map) sensor is a sensor used in the electronic control system of an internal combustion engine.

This vehicle is high at times, indicating pressure pulses in the intake. The map sensor in your vehicle has nothing to do with maps or navigation. Output generally changes about 0.7 to 1.0 volts for every 5 inches hg of change in vacuum. The map voltage readings should range between 0.9 to 1.5 volts.