Nissan map/baro 977/8/2023 ![]() ![]() However, while the pistons are pulling a vacuum on the down-stroke, outside barometric pressure is also pushing air into the cylinder. The sensor measures intake manifold vacuum, which varies depending on how wide open the throttle is. The Manifold Absolute Pressure sensor/Barometric Pressure Sensor (MAP/BARO)is a “speed density” method of determining the air fuel ratio. Trouble Codes > P Code Definitions > Generic non-manufacturer-spec… > P0105 Manifold Absolute… P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction Fix code P0105
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