First Manifold Absolute Pressure Sensor/Barometric Sensor Low.” It is set when the PCM detects that the manifold absolute pressure (MAP) signal voltage is categorized as “too low”. Your car is fitted with a MAP sensor that measures the intake manifold's pressure. P0107
P0109 is Manifold Absolute Pressure Sensor/Barometric Sensor Low.” It is set when the PCM detects that the manifold absolute pressure (MAP) signal voltage is categorized as “too low”. Your car is fitted with a MAP sensor that measures the intake manifold's pressure.