Chrysler
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    MAP Sensor Circuit Low Input Conditions
Cause:
    Engine speed from 400-1500 rpm, TP sensor input less than 1v, then the test started and the PCM detected a MAP input of less than 1.2v at startup, or less than 0.02v with engine running (conditions met for 1.76 seconds)

Ford
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Barometric Sensor Low Conditions
Cause:
    Engine running and the PCM detected a BARO sensor operating range of less than 5.0v

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

GM
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    MAP SensorCircuit Low Input Conditions
Cause:
    DTC P0122 and P0123 not set, engine speed 700 rpm or less with throttle angle 18 degrees or less, or engine speed 1800 rpm or less with throttle angle 13 degrees or more, Transaxle not in P/N, then the PCM detected that the MAP input was 0.08v or less.

Nissan
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Manifold absolute pressure (MAP) sensor - voltage low
Cause:
    Wiring, MAP sensor, ECM