Case IH 19782 – Engine Control Module (ECM) or Vehicle Control Module (VCM) / Dosing Control Unit (DCU): SCR Inducement: Warning, triggered by Costumer Hard fault

An emissions inducement (limp mode) code indicating that the Selective Catalytic Reduction (SCR) system has detected a severe or prolonged emissions fault (such as an empty DEF tank, poor DEF quality, disconnected sensors, or system tampering), triggering a severe engine derate.

• Tier 4b
• Maxxum
• Puma
• Magnum
• Steiger
• Quadtrac
• Axial-Flow 5130
• Axial-Flow 6130
• Axial-Flow 7130
• Axial-Flow 8230
• Axial-Flow 9230
• N-Series TLBs
• heavy wheel loaders

1. 1

   Scan the ECM for primary active SCR/DEF fault codes (e.g., NOx sensor plausibility, DEF pump pressure, or DEF quality sensor faults) to identify the root cause

2. 2

   Check the DEF fluid level to ensure the tank is not empty

3. 3

   Test DEF quality using a refractometer; it must be exactly 32.5% urea (contaminated or watered-down DEF is a leading cause)

4. 4

   Inspect wiring harnesses and connectors for the DEF dosing unit, DEF quality sensor, and upstream/downstream NOx sensors for physical damage or corrosion

1. 1

   Repair the Root Cause

   Fix whatever triggered the inducement. This may involve draining and refilling the DEF tank with fresh fluid, replacing a clogged DEF filter, or replacing a failed NOx sensor.

2. 2

   Perform a System Test

   Once the physical repair is complete, note that the machine will not automatically exit limp mode because code 19782 is a latched code mandated by emissions regulations.

3. 3

   Execute an Inducement Reset

   Connect a dealer-level diagnostic tool (such as the Case IH Electronic Service Tool (EST), Jaltest, or Bosch ESI[truck]).

4. 4

   Run Reductant Fluid Quality Test

   Run a successful 'Reductant Fluid Quality Test' or SCR system test via the diagnostic software.

5. 5

   Perform Inducement Mode Reset

   Navigate to the engine control system menu and perform the 'Inducement Mode Reset' procedure to clear the latched 19782 code and restore full engine power.