Massey Ferguson 0A.23.21: External Hydraulic Valve 2 Issue

Indicates a fault or potential connection problem associated with the second external hydraulic remote/spool valve on the tractor.

• 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

   Use a compatible diagnostic tool to pull active and stored codes to confirm 0A.23.21 is the primary fault

2. 2

   Inspect the wiring harness and electrical connectors at External Hydraulic Valve 2 for damage, corrosion, or loose connections

3. 3

   Check the spool position sensors at the valve for physical damage or connection issues

4. 4

   Consult the specific tractor's OEM service manual to perform electrical testing on the valve circuit

1. 1

   Repair wiring harness

   Repair the wiring harness to the valve.

2. 2

   Replace sensor

   Replace the spool position sensor.

3. 3

   Replace valve slice

   Replace the spool valve slice itself.