Case IH 3215 – Engine ECU (EDC - Electronic Diesel Control module): Bank1 Warning - Application Dependent

This code indicates a fault detected in the fuel injection system specifically on Bank 1 (which typically covers the front half of the engine cylinders). It fundamentally points to an electrical issue such as a short circuit, open load, or resistance issue in the fuel injector wiring harness or the injector solenoids on Bank 1.

• Magnum 235
• Magnum 275
• Magnum 310
• Magnum 335
• Magnum 340
• Magnum 380
• Farmall 90C
• Farmall 100C
• Farmall 110C
• Farmall 115U
• Farmall 120C
• Maxxum series
• Puma series
• Steiger/Quadtrac models
• Axial-Flow series
• Case Skid Steer 435
• Case Skid Steer 440
• Case Skid Steer 450
• Case Skid Steer 465
• Compact Track Loader 435
• Compact Track Loader 440
• Compact Track Loader 450
• Compact Track Loader 465

1. 1

   Scan for Related Codes: Check if the EDC has logged accompanying Bank 1 codes such as 3210 (General Short-circuit on Injection Cable), 3211 (Injection Cable Short-circuit Low Side to Ground), or 3216 (Bank1 Warning - Open Load).

2. 2

   Harness Inspection: Visually inspect the fuel injector wiring harness for Bank 1. Look for chafing, melted insulation, or loose connections at the ECU and the injector terminals.

3. 3

   Electrical Testing: Disconnect the harness and use a multimeter to check for continuity, shorts to ground, and open circuits between the EDC and the Bank 1 injectors.

4. 4

   Injector Solenoid Resistance: Measure the resistance across the terminals of each fuel injector on Bank 1 to ensure they fall within FPT/Bosch factory specifications.

1. 1

   Disconnect Power

   Disconnect the machine's battery to prevent electrical arcing or damage to the EDC.

2. 2

   Access the Injectors

   Remove the valve cover or necessary engine cowling to access the fuel injectors and the internal/external injector wiring harness.

3. 3

   Test and Isolate

   Based on the diagnostic checks, isolate whether the fault lies in the wiring harness or a specific injector.

4. 4

   Replace Faulty Component

   If the harness is shorted/open: Replace the engine wiring harness or the specific injector harness section. If an injector fails the resistance test: Replace the faulty fuel injector. (Note: OEM guidelines often recommend replacing the entire set of injectors to ensure optimal performance and avoid mixing genuine and aftermarket atomization rates).

5. 5

   Reassembly

   Reconnect the wiring harness, ensuring all connectors click into place securely. Reinstall the valve cover and cowling.

6. 6

   Clear Codes

   Reconnect the battery. Use a CAN-BUS diagnostic tool to clear the 3215 fault code from the EDC memory.

7. 7

   Test Run

   Start the engine and monitor the diagnostic tool to ensure the code does not return under load.