Massey Ferguson 0A.11.19 – Onboard diagnostic system: External Hydraulic Valve 1 Issue

Fault code 0A.11.19 indicates a fault within the external hydraulic control circuit, specifically relating to the first spool or distribution valve. This is typically caused by a connection problem on the hydraulic valve or an issue with the spool position sensor value, which disrupts communication and hydraulic control.

• 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
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Connect a compatible diagnostic tool to retrieve active codes and verify if 0A.11.19 is active or stored.

2. 2

   Inspect the wiring harness and connectors at External Hydraulic Valve 1 for connection problems.

3. 3

   Check the spool position sensor values using the diagnostic tool for errors.

4. 4

   Verify the tractor's hydraulics are set to the external hydraulic circuit rather than the three-point hitch.

5. 5

   Visually inspect the valve block and cylinders for leaks or physical damage, and verify if the hydraulic pump is building pressure.

1. 1

2. 2

   Isolate the fault

   Use the diagnostic tool to determine if the issue is electrical (wiring or sensor) or mechanical (stuck spool valve).

3. 3

4. 4

5. 5

   Repair wiring and connections

   If a connection problem is found at the valve block or the Mid Mount Valve Module, clean the contacts, repair any damaged wires, and securely reconnect the harness.

6. 6

7. 7

8. 8

   Replace faulty components

   If the spool position sensor or electric spool valve control switch provides erratic values and cannot be recalibrated, replace them. If the valve is internally damaged or leaking, replace the External Hydraulic Valve 1 assembly or rebuild it using an OEM repair kit.

9. 9

   Clear the codes

   Once the repair is complete, use the diagnostic tool or the manual reset procedure to clear the 0A.11.19 DTC from the system.

10. 10

    Test the system

    Operate the external hydraulic circuit to ensure proper fluid flow, pressure, and that the code does not return.