Fuel Temperature Sensor: Description
WARNING: This page is about a different car, the 2006 Dodge Sprinter. However, it is still accessible from the selected car via links, so may be relevant.
The fuel temperature sensor is integrated in the high pressure fuel pump next to the fuel quantity valve. The sensor detects the temperature of the fuel and supplies that information to the ECM. The sensor ranges from - 40°F (- 40C) to 284°F (140°C). If the engine is cold, the actual value sent will read ambient temperature. The value rises after the engine has been started.