Case IH F-519859-00 - ECU – Engine Control Unit (Engine ECU): Info: Torque Limitation active: OBD performance limiter is active.

This is an informational fault code indicating that the engine's On-Board Diagnostics (OBD) system has actively commanded a power reduction (torque limitation or "creep mode") as a protective measure or an emissions-compliance inducement.

• MAGNUM AFS Connect
• Steiger
• Magnum
• Maxxum
• Farmall
• 240 Series Combines
• Komatsu WB93R-8

1. 1

   Scan for root-cause codes using the CNH Electronic Service Tool (EST), as this code does not require action on its own.

2. 2

   Analyze the failure memory for primary fault codes related to NOx sensor signal deviations, SCR inducement warnings (DEF quality, tampering, or empty tank), or engine coolant/turbocharger over-temperature protections.

3. 3

   Check the limiter status to verify which specific system activated the performance limitation.

1. 1

   Emergency Override (If necessary)

   If the machine is stranded in the field or fully loaded, the OBD performance limiter can be temporarily disabled using the dealer service tester at maximum 5 times for 4.00h each time.

2. 2

   Diagnose the Root Cause

   Follow the troubleshooting tree for the primary fault code found during your diagnostic check (e.g., diagnosing a failed NOx sensor, draining contaminated DEF fluid, or fixing a coolant leak).

3. 3

   Perform the Physical Repair

   Replace the faulty emissions or engine component dictating the inducement.

4. 4

   Reset the Inducement

   Once the root cause is repaired, use the CNH EST to clear the fault codes and reset the SCR inducement / restart counters.

5. 5

   Test Run

   Operate the machine under load to ensure the torque limitation does not reactivate and that NOx conversion levels return to normal parameters.