Chrysler
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    CNG Temperature Sensor Low Input Conditions
Cause:
    Engine running, then test started and the PCM detected that the CNG temperature sensor input was under 0.51v. Refer to Circuit Test or code repair chart for details to test CNG sensor, its related circuits and the PCM.

Ford
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Engine Fuel Temperature Sensor 'A' Circuit Low Conditions
Cause:
    Engine running, then the PCM detected an EFT sensor 'A' signal that was less than the calibrated limit of 0.2 v [275°F] during the self-test

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

GM
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Fuel Temperature Sensor Circuit Low Input Conditions
Cause:
    Key on or engine running, then the PCM detected that the Fuel Temperature sensor input was over 215°F, condition met for 2 seconds

Nissan
Type:
    Powertrain - Fuel and Air Metering - ISO/SAE Controlled
Description:
    Fuel tank temperature sensor - voltage low
Cause:
    Wiring, fuel tank temperature sensor, ECM