Massey Ferguson A.13.29 – Mid Mount Valve Module / Dash: External Hydraulic Valve 1 Issue

Indicates a fault within the hydraulic control system, typically related to an electrical connection problem on the hydraulic valve, an issue with the spool position sensor value, or a failure in the valve's calibration.

• 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
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Inspect the wiring harness and electrical connectors leading to External Hydraulic Valve 1 for damage, corrosion, or poor connection

2. 2

   Check the spool position sensor for accurate readings, as sensor value errors frequently trigger this code

3. 3

   Inspect the physical valve for signs of being stuck, which may present as sluggish hydraulic response or delayed lifting/steering

4. 4

   Ensure hydraulic fluid levels are correct and inspect hydraulic filters for clogs or contamination

1. 1

   Retrieve and Verify Codes

   Use a compatible Massey Ferguson diagnostic tool to confirm code 0A.13.29 and check for secondary codes (such as spool position sensor errors).

2. 2

   Resolve Electrical Faults

   Clean and reseat the electrical connector on External Hydraulic Valve 1. If the wiring harness is damaged, repair or replace the affected section.

3. 3

   Replace the Sensor (If Applicable)

   If the diagnostic tool indicates an erratic or missing spool position sensor value, remove and replace the spool position sensor on the valve body.

4. 4

   Valve Maintenance

   If the valve is mechanically stuck or suffering from internal leakage, remove the spool valve assembly. Clean the valve chamber and replace worn seals, or replace the entire spool valve assembly if it is heavily worn.

5. 5

   System Calibration

   After replacing the valve or sensor, use the diagnostic interface device to perform a "Calibration of Valves" procedure, which is required for the system to recognize the new spool positions.

6. 6

   Clear Codes

   Clear the DTCs from the system using the diagnostic tool and test the hydraulic implement controls to ensure the fault does not return.