Barometric Pressure (BARO) Sensor
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Mitsubishi Outlander, 2003 Mitsubishi Montero Sport, 2003 Mitsubishi Montero, 2003 Mitsubishi Lancer, and 2003 Mitsubishi Galant. However, it is still accessible from the selected car via links, so may be relevant.
BARO sensor is part of the Volume Airflow (VAF) sensor assembly. To check BARO sensor and circuit, perform diagnostic procedure for DTC P0105. See DIAGNOSTIC TESTS in appropriate SELF-DIAGNOSTICS article.