New Holland 4123 – EHR: Rear Remote No. 2 Manually Operated

This code indicates that the control module detects the spool for the second rear electro-hydraulic remote (EHR) valve is moving or positioned outside of its neutral state without an active electronic command from the cab. This typically means the valve is either being physically overridden via the manual lever, or there is a failure in the valve's proportional actuator/internal position potentiometer sending a false position signal back to the controller.

• T6010
• T6020
• T6030
• T6040
• T6050
• T6060
• T6070
• T6080
• T6090
• T6.120
• T6.140
• T6.150
• T6.155
• T6.160
• T6.165
• T6.175
• T7.170
• T7.185
• T7.200
• T7.210
• T7.220
• T7.235
• T7.250
• T7.260
• T7.270
• T8 Series

1. 1

   Inspect the number 2 rear remote valve, wiring harness, and connectors for visible damage, corrosion, or loose connections (especially under the cab)

2. 2

   Check for other related fault codes (e.g., 4124 for driver faults, 4125 for potentiometer faults, or 4126 for inability to reach neutral) to help pinpoint the issue

3. 3

   Swap the suspect remote valve with a known good identical valve on the tractor to isolate whether the fault is in the valve itself or the wiring/controller

4. 4

   Assess overall hydraulic system health, as sluggish performance could point to a sticking hydraulic compensator valve on the pump

5. 5

   Check if the CAN-based EHR valves require calibration, which is typically performed through the tractor's diagnostic menu

1. 1

   Verify the Fault

   Confirm that the fault code is active and can be reproduced.

2. 2

   Perform Diagnostic Checks

   Complete the diagnostic checks listed above.

3. 3

   Address Wiring and Connector Issues

   If any wiring or connector issues are found, repair or replace the damaged components.

4. 4

   Attempt Calibration

   If possible, attempt to recalibrate the EHR valves through the tractor's service menu. An unsuccessful calibration can indicate a faulty valve.

5. 5

   Replace the Remote Valve Assembly

   If the diagnostic checks and calibration attempts do not resolve the issue, replace the number 2 rear remote valve assembly, which typically contains the spool, solenoids, and position sensor.