Ford
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Fuel Pump Primary Circuit Low Conditions
Cause:
    Key on, or engine running, then the PCM did not detect voltage on the FP Monitor circuit with the fuel pump commanded on Check the IFS switch and its relay

Generic
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Fuel Pump Secondary Circuit Low

GM
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Fuel Pump Feedback Circuit Low Input Conditions
Cause:
    Engine speed over 24 rpm, Fuel Lift Pump commanded on, then the PCM detected that the Fuel Pump Feedback voltage was 2v or less, condition met for 1.3 seconds