New Holland ICU 14017 – ICU (Instrumentation Control Unit): Fuel Level Sensor voltage out of range low.

This code indicates that the voltage signal returning from the fuel level sender to the control unit has dropped below the minimum acceptable threshold. This usually points to a short circuit to ground in the sensor's signal wire, a severely corroded connector, or an internal short/failure within the fuel level sensor itself.

• New Holland T8 Series
• New Holland T9 Series
• New Holland T5 Series
• New Holland T6 Series
• New Holland T7 Series
• New Holland CR Series
• New Holland CX Series
• New Holland TD Series
• New Holland B-series backhoes
• New Holland L-series skid steers

1. 1

   Visually inspect the wiring harness from the fuel tank sensor to the main chassis harness for chafed insulation, pinched wires, or areas shorting to ground.

2. 2

   Disconnect the fuel level sensor at the tank and inspect the pins for moisture, dirt, or green corrosion.

3. 3

   With the ignition key ON, probe the harness connector to ensure the sensor is receiving the correct reference voltage from the ICU.

4. 4

   Test the signal wire for continuity back to the ICU and verify it is not shorted to the chassis ground.

5. 5

   Measure the resistance across the terminals of the fuel level sensor itself to check for a dead short (zero ohms) or an out-of-range reading indicating internal failure.

1. 1

   Preparation

   Park the machine on a level surface, turn off the engine, and disconnect the negative battery cable to prevent electrical sparks near the fuel tank.

2. 2

   Access the Sensor

   Locate the fuel level sensor, typically mounted on the top or upper side of the fuel tank. Clean the area thoroughly to prevent dirt or debris from falling into the fuel tank during removal.

3. 3

   Disconnect

   Unplug the electrical harness connector from the sensor.

4. 4

   Removal

   Unscrew the retaining ring or remove the mounting bolts holding the sensor in place. Carefully lift the sensor and its float arm assembly out of the tank.

5. 5

   Installation

   Insert the new fuel level sensor into the tank, ensuring the float arm is oriented correctly and moves freely without hitting the tank walls. Always use a new rubber seal or O-ring to prevent diesel leaks.

6. 6

   Secure

   Tighten the retaining ring or bolts to the specified torque. Reconnect the electrical harness.

7. 7

   Verification

   Reconnect the battery and turn the ignition key to the ON position. Verify that the fuel gauge on the dashboard registers the correct fuel level. Clear the inactive ICU 14017 fault code using the machine's onboard display or a diagnostic service tool.