Case IH 19785 – Engine Control Unit (ECU): Customer Moderate Inducement: Level 3 (Creep mode), triggered by fault

A software-enforced SCR Inducement code indicating the engine has been forced into a severe derate (Creep Mode) because a moderate emissions-related fault impacting NOx efficiency has been active for too long without being repaired.

• Tier 4b
• Tier 4 Final FPT diesel engines
• Case N-series Tractor Loader Backhoes (TLBs)
• Case IH agricultural tractors and loaders equipped with Tier 4 Final CEGR & DOC/SCR systems

1. 1

   Scan for Root-Cause Codes using the CNH Electronic Service Tool (EST) to find the primary SCR/DEF fault (e.g., NOx sensor plausibility, DEF dosing valve blockages, EGR valve issues, or DEF tank temperature faults)

2. 2

   Check DEF/AdBlue fluid level and verify it is not contaminated, degraded, or diluted

3. 3

   Visually inspect SCR components, including wiring harnesses, connectors, and lines to the DEF dosing module, NOx sensors, and DEF supply pump for damage or corrosion

1. 1

   Identify the Primary Fault

   Use the diagnostic tool to find the specific component failure (e.g., failed NOx sensor, blocked DEF doser) that caused the moderate NOx efficiency drop.

2. 2

   Repair the Root Cause

   Replace the faulty sensor, unclog the DEF injector, repair damaged wiring, or drain and refill bad DEF fluid as dictated by the primary fault code.

3. 3

   Clear Fault Codes

   Use the diagnostic tool to clear the inactive codes from the ECU memory.

4. 4

   Perform SCR System Validation / Reset

   Use the diagnostic tool to perform an 'SCR System Validation Test' or a forced regeneration to prove to the ECU that the NOx efficiency is back within normal parameters, which will clear the Level 3 Inducement and restore full engine power.