Case IH 19761 – Engine Control Module (ECM) / Engine ECU: Value of the remaining SCR distance within the info range

This is an SCR (Selective Catalytic Reduction) Inducement code. It means the engine control system has detected a fault within the emissions system (such as low DEF level, poor DEF quality, or a hardware failure) and has started an inducement countdown. The 'info range' indicates that this is the first warning stage. It is a symptom/reaction code triggered by another active fault in the SCR system.

• Tier 4b
• Stage IV
• Stage V
• Magnum
• Steiger
• Puma
• Optum
• Maxxum
• Axial-Flow

1. 1

   Scan for Root-Cause Codes: Use the CNH Electronic Service Tool (EST) to check for other active SCR-related fault codes (e.g., NOx sensor faults, DEF dosing pump faults, DEF quality sensor faults)

2. 2

   Check DEF/AdBlue Level: Ensure the DEF tank is adequately filled

3. 3

   Test DEF Quality: Use a DEF refractometer to test the fluid in the tank. It must be exactly 32.5% urea concentration

4. 4

   Inspect the DEF Dosing Injector: Remove the DEF injector from the exhaust pipe and inspect it for severe white crystallization (urea buildup) or physical blockage

5. 5

   Check DEF Lines: Inspect the lines between the DEF pump and the injector for leaks, kinks, or blockages

1. 1

   Address the Root Cause

   Repair or replace the component flagged by the primary fault code (e.g., replace a faulty NOx sensor, swap a clogged DEF filter, or replace a failed DEF supply pump).

2. 2

   Address Fluid Issues

   If the DEF fluid is contaminated or degraded, drain the tank completely, flush it with distilled water, and refill with fresh, ISO-compliant DEF.

3. 3

   Clean/Replace the DEF Injector

   If the DEF injector is clogged with crystallized urea, clean it using warm distilled water. If it has failed mechanically or electrically, replace it.

4. 4

   Perform a Dosing System Test

   Using the CNH EST diagnostic software, run a DEF Dosing Quantity Test to verify the pump and injector are spraying the correct amount of fluid.

5. 5

   Reset the Inducement Timer

   Once the physical repair is complete, you must use the CNH EST to perform an 'SCR Inducement Reset' or force a stationary DPF/SCR regeneration. This tells the ECM that the system is fixed, clearing the 19761 code and restoring full engine power.