Case IH R14 – EHR (Electronic Hydraulic Remote) Control Unit or Central Controller (XCM): Valve 1 Supply Under Voltage/Over Voltage Or Output Stage Faulty Or Transducer Faulty Or Spool Neutral Error Or Spool Not Neutral Error

A multi-condition fault code indicating a failure in the Electronic Hydraulic Remote (EHR) Valve 1 circuit or mechanics. The system has detected a voltage issue (under 8V or over 36/45V), an output stage/transducer fault, or a mechanical spool error (stuck or not in neutral).

• MXM
• MXM 120
• MXM 130
• MXM 135
• MXM 140
• MXM 150
• MXM 155
• MXM 165
• MXM 175
• MXM 180
• MXM 190

1. 1

   Test the voltage supply at the EHR Valve 1 connector to ensure it is receiving a stable 12V supply and is not dropping below 8V or surging.

2. 2

   Inspect the wiring harness between the EHR Valve 1 and the Central Controller (XCM) for chafing, open circuits, short circuits to ground, or corroded pins.

3. 3

   With the machine off and pressure relieved, check if the spool is physically jammed by debris.

4. 4

   Verify that the EHR valve is communicating properly with the controller via the tractor's H-Menu diagnostics.

1. 1

   Isolate the Fault

   Swap the electrical connector from EHR Valve 1 to EHR Valve 2. If the fault code changes to R24 (Valve 2 Supply/Spool Error), the issue is internal to the valve itself. If the code remains R14, the issue is in the tractor's wiring harness or the XCM controller.

2. 2

   Repair Wiring

   If the harness is faulty, repair the broken wires or replace the connector pigtail.

3. 3

   Valve Replacement/Rebuild

   If the valve is the culprit (faulty transducer or stuck spool), remove the EHR Valve 1 assembly. You can attempt to replace the internal/external O-rings and clean the spool, but a failed internal transducer or output stage requires replacing the Electro-Hydraulic Valve Head or the entire spool valve assembly.

4. 4

   System Calibration

   After repairing or replacing the valve, recalibrate the EHR system. Using the tractor's instrument cluster, enter the H-Menu (specifically the HL menu for EHR valve number reprogramming). Install a diagnostic test switch (Tool No. 380000488) and operate the No. 1 EHR Valve timer switch to activate the calibration procedure so the controller recognizes the new valve limits.