Case IH 15992 – MTA CCM / APH: Wrong steering dataset

This fault code indicates a software configuration mismatch. The steering dataset currently loaded into the steering controller does not match the required dataset for the tractor's specific build, model, or installed options.

• MAXXUM T4E
• VESTRUM CVX
• Maxxum
• Puma
• Optum
• Magnum

1. 1

   Determine if the PVED-CLS steering valve, the CCM, or the Armrest module was recently replaced, updated, or swapped from another machine (new units often come with generic software).

2. 2

   Use the CNH Electronic Service Tool (EST) to verify the tractor's configuration, ensuring Autoguidance (NAV) and Variable Ratio Steering (VRS) options match the physical hardware.

3. 3

   Look for accompanying EEPROM or configuration codes, such as 15990, 15334/15336, or 15991. Unclearable EEPROM CRC failure codes may indicate an internally failed controller.

1. 1

   Connect diagnostic tool

   Connect the CNH Electronic Service Tool (EST) to the tractor's diagnostic port and turn the ignition key to the ON position.

2. 2

   Navigate to programming menu

   Open the EST software and navigate to the Engine Download Tool and Programming or the specific Controller Programming menu for the steering system.

3. 3

   Select controller

   Select the PVED-CLS / Advanced Steering controller.

4. 4

   Download dataset

   Download the correct steering dataset from the CNH server (or your local EST database) that matches the exact serial number and build configuration of the tractor.

5. 5

   Flash dataset

   Execute the dataset registration/flash process. Monitor the progress on the EST screen and do not interrupt the power supply.

6. 6

   Cycle key

   Once the download is complete, follow the EST prompts to cycle the key (key off, wait for the power relay to click, key on).

7. 7

   Perform calibration

   Navigate to the calibration menu and perform a full Steering Calibration, which includes calibrating the Wheel Angle Sensor (WAS) and the steering valve deadbands.

8. 8

   Clear codes and test

   Clear the fault code stack and test the steering and autoguidance systems to ensure the code does not return.