Case IH 51113 – AUX (Auxiliary / Remote Valve) Controller: Invalid Software Instruction Executed

This code indicates that the control module attempted to process a software command that is invalid, corrupted, or incompatible. It can result in unresponsive remote hydraulic controls, erratic operation, or unexpected shutdowns of the auxiliary functions.

• MX Magnum
• Case IH MX Magnum Series
• Case IH TG Series
• Case IH Steiger Series

1. 1

   Check power and ground connections to the AUX controller, specifically verifying connector C053 or the main power feed for a solid, clean connection to the battery.

2. 2

   Inspect the controller's chassis grounding, as voltage drops can cause the module to misread software instructions.

3. 3

   Check for software conflicts, such as interrupted recent software updates or incompatible software versions flashed to the CAN bus network.

1. 1

   Inspect and Clean Connections

   Locate the Auxiliary Controller. Disconnect the main wiring harness and inspect the pins for corrosion, moisture, or pushed-out terminals. Clean the battery terminals and the controller's ground connection.

2. 2

   Clear and Reset

   Clear the fault code from the tractor's instrumentation display or diagnostic tool.

3. 3

   Power Cycle

   Shut down the tractor completely, wait a few moments, and restart the engine.

4. 4

   Evaluate

   Operate the remote valves. If the code does not return, it was likely a temporary voltage anomaly.

5. 5

   Software Reflash

   If the fault code immediately returns, the software is corrupted. You must contact your district Product Support Manager (PSM) or local Case IH dealer to have the Auxiliary Controller reflashed with the latest OEM software.

6. 6

   Hardware Replacement

   If the dealer is unable to communicate with the module to reflash it, or if the reflash fails to clear the code, the internal memory of the Auxiliary Controller has failed, and the module must be replaced.