DTC P0108: BARO Circuit, High Input: Notes
WARNING: This page is about a different car, the 2002 Mazda Protege5 and 2002 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
PCM monitors voltage from EGR boost sensor when intake air temperature is more than 50°F (10°C) and EGR boost sensor solenoid is turned off (atmospheric pressure is applied to sensor). Code is set when input voltage from EGR boost sensor is more than 4.92 volts. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during first drive cycle. Possible causes are:
- EGR boost sensor malfunction.
- Open or short circuit between EGR boost sensor and PCM.
- PCM malfunction.