Massey Ferguson 0B.X.04 – Mid Mount Valve Module: Loader Mid Mount Electro Valve Solenoid Open Circuit

The onboard diagnostic system has detected a break in the electrical circuit that is preventing current from flowing to the solenoid. This is typically caused by a broken wire, a loose or disconnected plug, dirty/corroded contacts in a connector, or a completely failed (burnt out) internal solenoid coil.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5425
• 5435
• 5445
• 5455
• 5460
• 5465
• 5470
• 5475
• 5709
• 5710
• 5711
• 5712
• 5713
• 6445
• 6455
• 6460
• 6465
• 6470
• 6475
• 6480
• 6485
• 6490
• 6612
• 6613
• 6614
• 6615
• 6616
• 7614
• 7615
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7716
• 7719

1. 1

   Inspect the wiring harness leading to the mid-mount valve block for severed wires, chafing, or loose connections

2. 2

   Disconnect the harness at the affected solenoid and check for dirty contacts, moisture, or corrosion inside the connector

3. 3

   Turn the tractor key to the ON position, actuate the loader joystick, and use a multimeter to verify that the tractor is sending 12V to the connector

4. 4

   Measure the resistance (Ohms) across the two pins of the solenoid itself. A healthy OEM solenoid should read approximately 10 OHMs. If it reads 'OL' (infinite resistance), the internal coil is broken

1. 1

   Power Down

   Turn off the tractor and disconnect the negative battery terminal to prevent electrical shorts during repair.

2. 2

   Locate the Valve

   Locate the mid-mount electro-hydraulic valve block (usually mounted on the right side of the tractor chassis, below the cab, where the loader hydraulic lines route).

3. 3

   Disconnect Harness

   Unplug the electrical connector from the specific solenoid throwing the code.

4. 4

   Remove Solenoid

   Remove the retaining nut at the end of the solenoid stem. Slide the faulty solenoid coil off the valve cartridge.

5. 5

   Install New Part

   Slide the new 12V / 10 OHM solenoid coil onto the valve stem and secure it with the retaining nut. Do not overtighten, as this can damage the plastic casing.

6. 6

   Reconnect and Clear Codes

   Reconnect the electrical harness. Reconnect the battery. Use a compatible Massey Ferguson diagnostic tool to clear the 0B.X.04 DTC from the Mid Mount Valve Module. Test the loader functions to ensure the code does not return.