Massey Ferguson 0A.51.1F: External Hydraulic Valve 5 Issue
Issue description
Indicates a malfunction, fault, or potential connection problem associated with the 5th external hydraulic remote valve (spool valve) on the tractor.
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 to confirm the presence of 0A.51.1F and check for any other related codes (such as 0A.41.FF, which indicates a connection problem).
Inspect the wiring harness, connectors, and pins leading to External Hydraulic Valve 5 for corrosion, damage, or loose connections.
Do not clear the DTC immediately without addressing the root cause, as the fault will recur or could lead to further equipment damage.
Repair steps
Locate valve
Locate External Hydraulic Valve 5 at the rear remote valve stack.
Repair wiring or connectors
Repair or replace any damaged wiring or connectors found during the diagnostic inspection.
Replace hydraulic valve
If the wiring is intact and the valve solenoid is receiving the correct voltage/signal, the hydraulic valve itself (or its solenoid) may have failed internally and will need to be replaced.
Connect diagnostic tool
After repairing the connection or replacing the valve, connect the diagnostic tool to the tractor's onboard diagnostic system.
Clear DTCs and verify
Clear the DTCs and operate the hydraulic system to verify the fault code does not return.
Parts you might need
(3)Hydraulic Spool/Distribution Valve
3713928M5Alternative numbers: 3713928M4, 3902064M91. Fits 3600, 8100, and 8200 series tractors.
Single Hydraulic Remote Valve
12012002Bolts to the lift cover; fits various older models (e.g., 200, 300 series).
Hydraulic Pump Control Valve Assembly
1862486M96Manufacturer: Reliance (Aftermarket) / Massey Ferguson (OEM)
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