New Holland NH 14041 – ADIC (Analog-Digital Instrument Cluster) or Engine Controller (EDC): Engine coolant temp short to VCC or open circuit

This indicates that the control module is receiving a voltage signal from the engine coolant temperature sensor that is too high (shorted to the VCC/reference voltage) or that the circuit is completely broken (open circuit).

• T4.75F
• T4.85F
• T4.95F
• T4.105F
• T5040
• T6050
• T7.175
• T7.225

1. 1

   Check the coolant temperature sensor and its electrical connector for loose pins, corrosion, or physical damage.

2. 2

   Inspect the wiring harness between the sensor and the ADIC/Engine ECU. Look for broken wires (open circuit) or chafed wires shorting to a power source (VCC).

3. 3

   Disconnect the sensor and turn the key ON. Verify that the 5V reference voltage and ground are present at the connector.

4. 4

   Measure the resistance across the sensor's terminals. If it reads infinite resistance (OL), the sensor is internally open and must be replaced.

1. 1

   Preparation

   Turn off the engine, remove the key, and disconnect the battery to prevent electrical shorts. Ensure the engine is cool to avoid burns from hot coolant.

2. 2

   Locate the Sensor

   Find the engine coolant temperature sensor, typically located on the engine block or near the thermostat housing.

3. 3

   Disconnect Wiring

   Carefully unplug the electrical connector from the sensor.

4. 4

   Remove the Sensor

   Place a catch pan under the work area to catch any escaping coolant. Unscrew the faulty sensor from the housing.

5. 5

   Install the New Sensor

   Thread the new OEM coolant temperature sensor into the housing and tighten it to the manufacturer's torque specification.

6. 6

   Reconnect

   Plug the electrical connector back into the new sensor.

7. 7

   Refill Coolant

   Top off the engine coolant to replace any fluid lost during the swap.

8. 8

   Test

   Reconnect the battery, start the tractor, and monitor the instrument cluster. Verify that the temperature gauge operates normally and that fault code NH 14041 is no longer active.