Civic EX Sedan L4-1668cc 1.7L SOHC (VTEC) MFI (2001)
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Barometric Pressure Sensor: Description and Operation
Barometric Pressure (BARO) Sensor
The BARO sensor is inside the ECM/PCM. It converts atmospheric pressure into a voltage signal that the ECM/PCM uses to modify the basic duration
of the fuel injection discharge.