Massey Ferguson 0A.20.1B – Dash / Mid Mount Valve Module: External Hydraulic Valve 2 Issue

Indicates a fault within the hydraulic system, often triggered by a connection problem on the hydraulic valve, an issue with the spool position sensor value, or a loss of communication with the valve module.

• 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

   Retrieve Active Codes: Use a compatible Massey Ferguson diagnostic tool or interface device to confirm 0A.20.1B is active and check for secondary codes.

2. 2

   Inspect Connections: Check for physical connection problems or damaged wiring harnesses at External Hydraulic Valve 2.

3. 3

   Check Sensor Values: Verify the readings of the spool position sensor for Valve 2, as erratic or missing values commonly trigger this fault family.

4. 4

   Verify Communication: Check the CAN/communication lines between the Dash display and the Mid Mount Valve Module.

1. 1

   Clean and reseat connector

   Cleaning and reseating the electrical connector at External Hydraulic Valve 2.

2. 2

   Test wiring harness

   Testing the wiring harness for continuity back to the valve module.

3. 3

   Replace components

   Replacing the spool position sensor or the entire External Hydraulic Valve 2 assembly if internal electrical failure has occurred.

4. 4

   Clear DTCs

   Clearing the DTCs using a compatible diagnostic tool once the physical repair is complete.