Case IH F-519646-31 - ECU – Engine Control Module (ECM): SCR Inducement: severe inducement locked status reached

This is an emissions control lockout condition. It means the Selective Catalytic Reduction (SCR) / Diesel Exhaust Fluid (DEF) system has locked the engine (often preventing a restart or forcing a severe derate/limp mode) because a 4-hour inducement timer has expired due to an uncorrected critical emissions fault.

• MAGNUM AFS Connect
• Case IH Farmall 40
• Case IH Farmall 45
• Case IH Farmall 50
• Case IH Farmall 70A
• Case IH Farmall 110A
• Case IH Magnum
• Case IH Maxxum
• Case IH Puma
• Case IH Steiger

1. 1

   Do not attempt to replace parts for the 519646-31 code itself, as it is strictly a software lockout response.

2. 2

   Scan for root-cause fault codes that triggered the inducement timer (e.g., code 519644-31, DEF quality sensor errors, NOx sensor drift, or reagent dosing interruptions).

3. 3

   Diagnose the root cause by checking DEF fluid quality, inspecting SCR wiring harnesses, and verifying NOx sensor readings.

1. 1

   Repair the Root Cause

   Physically repair the underlying emissions failure that triggered the inducement (e.g., replace the failed NOx sensor, unclog the DEF injector, or refill with fresh DEF).

2. 2

   Connect Diagnostic Equipment

   Connect the Case IH Electronic Service Tool (EST) via a DPA5 diagnostic adapter to the machine's CAN BUS diagnostic port.

3. 3

   Navigate to the Reset Screen

   Open the EST software and navigate to the specific routine control screen.

4. 4

   Execute the Reset

   Run the "Engine Restart Counter Reset" (also identified in the software as "Reset the severe deactivation counter" Id. $029F).

5. 5

   Verify

   Cycle the key and verify that the severe inducement locked status is cleared and the engine can start and operate at full power.