Fuel Cooling System
WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The fuel cooler is diagnosed as part of the diesel powertrain secondary cooling system. For additional information, refer to ENGINE COOLING - 6.7L DIESEL POWERTRAIN SECONDARY COOLING .