Chrysler
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Barometric Pressure Sensor Circuit Conditions
Cause:
    Key on for less than 60 seconds or right after startup, system voltage over 8v, then the test started and the PCM detected a BARO sensor input of 4.5v or more or an input of 0 2v or less for 4 seconds (it should be 3.2-3.8v)

Generic
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Manifold Absolute Pressure/Barometric Pressure Circuit

GM
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    MAF Sensor Circuit High Frequency Conditions
Cause:
    DTC P0106, P0107, P0108, P0122, P0123 and P1108 not set, MAP sensor input at least 21.5 kPa, engine vacuum at least 11.8 kPa, then the PCM detected that the MAP signal changed less than 4 kPa in the one second following a 3.2 degree change in throttle position, and that the MAP signal was not within 17.3 kPa of the expected MAP reading This failure must occur five times