Case IH 17517 – Engine Control Unit (ECU): SCR Inducement: Level 1 (Torque reduction), triggered by EGR valve blocked fault

The engine's Exhaust Gas Recirculation (EGR) valve is mechanically blocked or stuck. Because the EGR system is critical for emissions control, this blockage triggers the Selective Catalytic Reduction (SCR) system's inducement strategy, forcing the machine into a Level 1 torque reduction (engine derate) to limit emissions.

• Steiger T4B
• Magnum
• Steiger
• Puma
• Farmall
• Axial-Flow combines

1. 1

   Inspect the EGR valve for mechanical blockages, such as dirt or heavy carbon buildup on the valve seat, which prevents it from opening or closing properly.

2. 2

   Connect the Electronic Service Tool (EST) to check for any other active urea/DEF system faults that may be contributing to the inducement lock.

1. 1

   Repair the Root Cause

   Clean, repair, or replace the blocked EGR valve to resolve the physical fault.

2. 2

   Connect the EST

   Connect the Electronic Service Tool (EST) to the machine's diagnostic port and turn the key switch to the ON position without starting the engine.

3. 3

   Navigate to Configuration

   In the EST software, navigate to the 'Configuration' icon.

4. 4

   Select Reset Menu

   Select the "Engine Restart Counter Reset / Unlock Inducement" screen.

5. 5

   Configure

   Click "CONFIGURE SELECTED ITEM".

6. 6

   Unlock Inducement

   Click the "RESET ENGINE RESTART COUNTER / UNLOCK INDUCEMENT" button to clear the inducement restart counters and unlock the system.

7. 7

   Verify

   Perform the SCR Fault Repair Verification Test using the EST to confirm the fault is fully resolved before returning the machine to service.