New Holland ENG 279 – Engine Control Module (ECM): Injection Control Valve current is out of range.

The control module has detected an electrical anomaly—specifically low, no, or out-of-range current—on the return circuit for the Injection Control Valve (ICV). This is typically caused by an open circuit, a short circuit, or a failed electrical stator on the ICV itself.

• TG210
• TG230
• TG255
• TG285

1. 1

   Inspect the wiring harness and connectors between the Engine ECM (Pin A7) and the Injection Control Valve for chafed wires, broken connections, or loose pins

2. 2

   Disconnect the ICV electrical connector and test the ICV stator for continuity to check for an open or shorted coil

3. 3

   Check the transient suppressor diode bolted to the engine block, which absorbs high-voltage surges; failure can cause ICV circuit errors

4. 4

   Check for mechanical contamination in the ICV, as broken accumulator check valve springs can send metal debris into the valve, causing an electrical overcurrent/undercurrent reading

1. 1

   Disconnect Power

   Disconnect the machine's batteries to prevent electrical shorts or further ECM damage during the repair.

2. 2

   Access the CAPS Pump

   Locate the CAPS injection pump on the engine and identify the Injection Control Valve (ICV) assembly.

3. 3

   Harness Repair

   If the diagnostic checks revealed a broken wire near the connector, splice in a new electrical repair connector or install an ICV extension harness to relieve strain.

4. 4

   Replace the ICV Stator

   If the wiring is intact but the stator failed the resistance test, remove the 4 small bolts attaching the electrical stator to the ICV body and install a new stator.

5. 5

   Replace the Complete ICV

   If the valve body is contaminated with metal debris or mechanically failed, remove and replace the entire Injection Control Valve assembly.

6. 6

   Reassembly

   Reconnect the ICV electrical connector and the battery terminals.

7. 7

   Clear and Test

   Use a diagnostic service tool to clear the ENG 279 fault code. Start the engine and verify that the code does not return and that engine power is restored.