F 550 4WD Super Duty V8-7.3L DSL Turbo VIN F (2001)
Barometric Pressure Sensor: Description and Operation
Barometric Pressure Sensor
The Barometric Pressure (BARO) sensor is a variable capacitor sensor that processes a signal indicating atmospheric pressure. This allows the PCM
to compensate for altitude. The PCM uses this information to calculate injection timing and glow plug control. With the 1999-1/2 model, the BARO
sensor is no longer a stand alone component. It is now contained in the PCM.
A BARO sensor fault will result in an out-of-range signal to the PCM. The PCM will assume a default value of 100 kPa (14.5 psi).
