Case IH 19267 – Engine Control Unit (ECU): Engine idle shutdown commanded from SCR inducement

This is a consequential (symptom) code rather than a root-cause hardware failure. It indicates that the engine has been forced into an idle-only or shutdown state by the emissions system. This regulatory derate (known as an "inducement") is triggered when the Selective Catalytic Reduction (SCR) system detects a critical, unresolved emissions fault. Common triggers include an empty Diesel Exhaust Fluid (DEF) tank, poor DEF quality, a disconnected DEF injector, or a failed NOx sensor.

• Tier 4b
• Puma
• Optum
• Magnum
• Steiger
• Maxxum
• N Series Loaders
• Farmlift Telehandlers
• Axial-Flow series

1. 1

   Scan for active codes using a diagnostic tool to find primary SCR/DEF codes (e.g., NOx sensor plausibility, DEF pressure low, DEF quality errors)

2. 2

   Check DEF level to ensure the tank is adequately filled, as an empty tank triggers a severe inducement

3. 3

   Test DEF quality using a DEF refractometer to verify the fluid is exactly 32.5% urea

4. 4

   Visually inspect the DEF dosing module, injector, lines, and wiring harnesses for leaks, crystallization, or physical damage

1. 1

   Connect Diagnostic Tool

   Hook up the CNH Electronic Service Tool (EST) to the machine's diagnostic port.

2. 2

   Identify Root Cause

   Pull the fault log and diagnose the primary SCR/DEF fault code that initiated the inducement timer.

3. 3

   Perform Physical Repair

   Repair the root cause. Depending on the primary code, this may involve draining and refilling the DEF tank with fresh fluid, replacing a clogged DEF filter, or installing a new NOx sensor or dosing module.

4. 4

   Clear Codes

   Clear the inactive fault codes from the ECU.

5. 5

   Reset Inducement Timers

   Perform an SCR system test, DEF dosing test, or a stationary desoot/regeneration via the EST. This step is strictly required to prove to the ECU that the emissions system is functioning properly, which resets the inducement timers and clears the 19267 shutdown command.

6. 6

   Verify Operation

   Cycle the key and run the engine to verify that code 19267 remains inactive and the engine operates at full RPM without shutting down.