Note: Some vehicles use a barometric pressure sensor (baro sensor) or MAF sensor instead of a MAP sensor. It’s also used as a backup in vehicles with a mass airflow sensor or MAF sensor (which measures air density and volume) to monitor the EGR valve. The MAP sensor is used in OBD II cars to test if the Exhaust Gas Recirculation or EGR valve is working properly.A MAP sensor signal can be converted into air mass data by using engine speed and Intake Air Temperature (IAT) sensor data.It can be used to check for a vacuum leak in the intake manifold. ![]()
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