New Holland ENG 3215 – ENGINE: Bank1 Warning - Application Dependent

An electrical anomaly, warning, or fault detected in the fuel injection circuit for Bank 1 (injector circuit for cylinders 1, 2, and 3). The engine controller has detected an issue such as a current level error, fast decay, or an open/short circuit on this specific bank of injectors.

• T8 Series
• T8.320
• T8.350
• T8.380
• T8.410
• T7 Series
• T6 Series
• T5 Series
• T6000 Series
• T7000 Series
• Magnum 235-340 (Series 4)
• Maxxum
• Puma
• Optum

1. 1

   Inspect the external engine wiring harness leading from the Engine ECU to the valve cover pass-through connector for Bank 1. Look for chafing, melted wires, or shorts to ground.

2. 2

   Disconnect the 89-pin or 36-pin connector at the Bosch EDC7 ECU and check for pushed-out pins, corrosion, or moisture.

3. 3

   Disconnect the injector harness and use a multimeter to test the resistance of the injectors on Bank 1 (Cylinders 1-3).

4. 4

   If the external wiring and ECU pins are good, check the internal fuel injector wire harness under the valve cover for heat degradation and oil intrusion.

1. 1

   Prep the Machine

   Turn off the machine, remove the key, and disconnect the negative battery cable.

2. 2

   Remove Valve Cover

   Clean the area around the valve cover to prevent debris from entering the engine. Remove the valve cover bolts and lift off the valve cover.

3. 3

   Disconnect the Harness

   Carefully disconnect the electrical leads from the fuel injectors on Bank 1.

4. 4

   Replace the Harness/Injector

   If the harness is brittle or failed testing, remove the pass-through connector from the cylinder head and install the new injector wire harness. If a specific injector failed the resistance test, remove the fuel lines and injector hold-down clamp, pull the injector, and replace it with a new Bosch/FPT unit.

5. 5

   Reassembly

   Install a new valve cover gasket and reinstall the valve cover. Torque all bolts to OEM spec.

6. 6

   Clear Codes

   Reconnect the battery. Use the CNH Electronic Service Tool (EST) or a compatible diagnostic scanner to clear the ENG 3215 fault code and verify the repair.