Massey Ferguson A.4X.12: External Hydraulic Valve 4 Issue

Indicates a malfunction, communication failure, or connection problem specifically isolated to the number 4 external hydraulic remote/spool valve.

• 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

   Use a compatible Massey Ferguson diagnostic tool to retrieve the exact decimal variation of the code (e.g., 0A.40.12 vs 0A.41.12) to pinpoint the exact nature of the fault.

2. 2

   Physically inspect the wiring harness, pins, and electrical connectors plugging into External Hydraulic Valve 4 for corrosion, damage, or loose fitment.

3. 3

   Consult the specific tractor's service manual to interpret the exact decimal extension of the DTC before tearing down the hydraulic block.

1. 1

   Locate

   Locate External Hydraulic Valve 4 on the rear remote block.

2. 2

   Check and repair

   Check and repair any damaged wiring or loose connections at the valve solenoid.

3. 3

   Replace

   If the electrical connection is sound, the valve itself (or its solenoid) has failed and the spool valve assembly must be replaced.

4. 4

   Clear

   Clear the DTCs using the diagnostic interface once the repair is complete.