Massey Ferguson 0A.10.13 – Onboard diagnostic system (Implement and hydraulic control / EHR): External Hydraulic Valve 1 Issue

The onboard diagnostic system has detected a malfunction related to the first rear remote hydraulic spool valve. This is typically an electrical or sensor fault, such as a connection problem, open circuit, short to ground, or an implausible reading from the spool position sensor, or it can be triggered if the valve is mechanically stuck or restricted.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Inspect the hydraulic oil level and condition for milky water contamination, burnt smells, or metal particles, and check the hydraulic/transmission filters.

2. 2

   Inspect the wiring harness leading to External Hydraulic Valve 1 for rub points, open circuits, or shorts to ground.

3. 3

   Disconnect the solenoid connector at the valve and check for dirt, moisture, or corroded pins.

4. 4

   Test the solenoid coil resistance and verify ground integrity. Use a diagnostic tool to check live data for the spool position sensor value against the physical command.

5. 5

   Check if the spool valve detents have rusted or seized, causing mechanical binding.

1. 1

   Safety First

   Lower all implements to the ground, turn off the engine, and relieve all hydraulic pressure from the system by cycling the remote levers/buttons.

2. 2

   Wiring Repair

   If the diagnostic checks revealed damaged wiring or a corroded connector at Valve 1, repair the harness or replace the pigtail connector.

3. 3

   Clean and Lubricate

   If the valve is mechanically binding due to rusted detents, carefully clean the external linkages and detent mechanisms and apply penetrating lubricant.

4. 4

   Valve / Solenoid Replacement

   If the solenoid coil is dead, the internal spool position sensor has failed, or the valve is internally seized/leaking, the External Hydraulic Valve 1 assembly must be replaced. Unbolt the hydraulic lines (have a catch pan ready for residual oil), remove the mounting bolts, and install the new valve block.

5. 5

   Filter Maintenance

   If contaminated oil caused the valve to stick, drain the hydraulic fluid and replace the remote valve/transmission filters.

6. 6

   Clear Codes

   Reconnect the battery, start the tractor, and use a compatible diagnostic interface to clear the 0A.10.13 DTC from the system. Test the remote valve operation.