Massey Ferguson 0A.2X.2A – Dash / Mid Mount Valve Module: External Hydraulic Valve 2 Issue
Issue description
Indicates a fault within the hydraulic control system, specifically targeting the second external hydraulic remote/spool valve. Typically caused by a connection problem on the hydraulic valve or an issue with the spool position sensor value.
Applies to these machines
41 machines- 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
Check the cause
Use a compatible Massey Ferguson diagnostic tool or interface device to confirm the code and check for secondary codes (like M16, M17, M21, or 0A.41.FF)
Check the physical wiring harness and connectors leading to External Hydraulic Valve 2 for connection problems
Check the spool position sensor values via the diagnostic tool to see if the sensor is reading out of range or failing to communicate
Verify the CAN bus/communication lines between the Dash display and the Valve Module
Repair steps
Disconnect the battery/power before servicing the hydraulic electrical connections.
Ensure power is removed to safely service the hydraulic electrical connections.
Clean and reseat the electrical connector on External Hydraulic Valve 2.
Look for corrosion, bent pins, or wire chafing.
Replace the spool position sensor on Valve 2.
Perform this step if the wiring is intact but the code persists, indicating the sensor is likely faulty.
Replace the external hydraulic valve actuator.
Perform this step if the spool position sensor is integrated into the valve actuator.
Clear the DTCs using the diagnostic interface and cycle the hydraulic valve.
Ensure the code does not return after cycling the valve.
Parts you might need
(3)External Hydraulic Valve Actuator
Specific to Valve 2 / Rear or Mid-Mount depending on setup
Spool Position Sensor
If serviced separately from the actuator
External Hydraulic Valve Control Assembly / Spool Valve Kit
4330201M91Generic OEM example for the 2600 series; exact fitment requires checking the AGCO parts catalog
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