Massey Ferguson A.20.2A – Dash / Mid Mount Valve Module: External Hydraulic Valve 2 Issue

Malfunction in the second external hydraulic remote (spool valve) circuit. The underlying condition is typically a connection problem on the hydraulic valve, an out-of-range spool position sensor value, or a loss of communication with the valve module.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7726S

1. 1

   Retrieve all active DTCs using a diagnostic tool to confirm if the issue is isolated to Valve 2 or if multiple valves are failing (indicating a broader module failure)

2. 2

   Inspect the wiring harness and connectors leading to External Hydraulic Valve 2 for corroded or loose pins (connection problem cause)

3. 3

   Test the spool position sensor values for Valve 2 to ensure the signal is not erratic or missing (sensor failure cause)

4. 4

   Verify the CAN bus and communication lines between the dash interface and the valve module (communication loss cause)

1. 1

   Depressurize the System

   Turn off the tractor and cycle the hydraulic controls to relieve any residual hydraulic pressure before servicing.

2. 2

   Inspect and Clean

   Locate External Hydraulic Valve 2 at the rear remote block (or mid-mount block). Disconnect the electrical connector, clean it with contact cleaner, and check for pushed-back pins or wire chafing.

3. 3

   Replace Sensor/Switch

   If the wiring is intact but the spool position sensor is returning faulty values, replace the sensor or the electric spool valve control switch.

4. 4

   Replace the Valve Block

   If the electronic solenoid or internal spool is mechanically seized or internally shorted, the specific spool valve section will need to be replaced.

5. 5

   Clear Codes

   Reconnect all components, power on the tractor, and use a diagnostic tool to clear the DTCs. Test the hydraulic remote with an implement to ensure the code does not return.