Replace the faulty coolant temperature sensor in your Ford 6.7L Powerstroke with the XDP XD1041 Engine Coolant Temperature (ECT) Sensor. The ECT sensor plays an important role by monitoring coolant temps and sending that data to the ECM. If it starts to fail you may notice erratic temperature readings, a check engine light, and other issues.

The XD1041 is designed to match the OE-specifications for a direct-fit, hassle-free installation. This sensor is constructed from durable materials to withstand constant heat cycles and the demanding conditions inside the cooling system.

Features:

• Direct-Fit Replacement
• High-Quality Construction
• (ECT) - Engine Coolant Temperature Sensor
• Fits ECT1 or ECT2 Position

The 2011-2016 Ford 6.7L Powerstroke models were equipped with two Engine Coolant Temperature Sensors, ECT1 & ECT2. In 2015 the secondary sensor location was changed and the positions are outlined below.^[1,2]

2011-2016 (ECT1): The Engine Coolant Temperature (ECT1) Sensor is located in the coolant crossover, next to the thermostat housing.
2011-2014 (ECT2): The Engine Coolant Temperature (ECT2) Sensor is located in the EGR cooler.
2015-2016 (ECT2): The Engine Coolant Temperature (ECT2) Sensor was relocated to a "T" fitting in the coolant line in the right front of the engine compartment which can be accessed by removing the air box.

Sources:
^[1]"Ford Coffee Table Book" - 6.7L Power Stroke Diesel Engine
^[2]"Ford Coffee Table Book" - 2015 "F" Series Super Duty.