Massey Ferguson A.11.11 – Electro-hydraulic unit / Hydraulic Valve Module: External Hydraulic Valve 1 Issue

Indicates a fault, electrical connection problem, or communication error with the first external hydraulic remote valve (spool valve) on the tractor. The system is detecting that the spool position sensor value is out of range, or there is a lack of communication with the valve's solenoid.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Inspect the wiring harness and connector at External Hydraulic Valve 1 for corrosion, backed-out pins, or physical damage

2. 2

   Use a compatible Massey Ferguson diagnostic tool to monitor the live values of the spool position sensor for Valve 1

3. 3

   Verify that there is communication between the tractor's dash and the hydraulic valve module

4. 4

   Ensure the valve spool is not physically stuck due to debris or hydraulic system contamination

1. 1

   Connect a diagnostic interface to confirm the 0A.11.11 code and check for any secondary codes (such as M16, M17, or M19) that indicate specific spool position sensor or communication failures.

   Confirm the 0A.11.11 code and check for secondary codes.

2. 2

   Locate External Hydraulic Valve 1 at the rear remote stack.

   Locate the valve.

3. 3

   Disconnect the electrical connector to the valve's solenoid and spool position sensor. Clean the contacts with electrical contact cleaner and apply dielectric grease.

   Clean the contacts and apply dielectric grease.

4. 4

   Reconnect the harness and clear the code. Cycle the tractor's key and test the remote valve.

   Reconnect, clear code, cycle key, and test.

5. 5

   If the code returns, use a multimeter to test the continuity of the wiring harness from the valve connector back to the Electro-hydraulic control unit. Repair any broken wires.

   Test wiring continuity and repair if necessary.

6. 6

   If the wiring is intact, the fault is internal to the valve's electronics. Replace the faulty solenoid coil or the spool position sensor on Valve 1.

   Replace faulty solenoid coil or spool position sensor.

7. 7

   If the sensor/solenoid cannot be serviced separately on your specific valve block, the entire External Hydraulic Valve 1 section must be replaced.

   Replace the entire valve section if components cannot be serviced separately.

8. 8

   Clear the codes and perform a functional test of the hydraulic remote.

   Clear codes and perform functional test.