Ford
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Fuel Rail Pressure Sensor Circuit Low Conditions
Cause:
    Engine running, then the PCM detected that the FRP sensor signal was less than 0.3v for gasoline vehicles (less than 0.5v for NG) during testing

Generic
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Fuel Rail Pressure Sensor "A" Circuit Low