Chrysler
Type:
    Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled
Description:
    Fuel Level Sending Unit Volts Too Low Conditions
Cause:
    Engine running, then the PCM received a message from the Body Control Module that indicated a Fuel Level Sending Unit Circuit Low condition had been detected

Generic
Type:
    Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled
Description:
    Fuel Level Sensor "A" Circuit Low

GM
Type:
    Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled
Description:
    Fuel Level Sensor Circuit Low Input Conditions
Cause:
    Key on or engine running, system voltage from 10-18v, then the PCM detected that the Fuel Level sensor signal was less than 3%, condition met for 10 seconds

Nissan
Type:
    Powertrain - Auxiliary Emission Controls - ISO/SAE Controlled
Description:
    Fuel tank level sensor - voltage low
Cause:
    Wiring, fuel tank level sensor