Massey Ferguson 14.01.05 – TRANS1: High Pressure Brake System Pressure Too High DYNA 6 (TRANS1)

The electronic control system has detected that the hydraulic or air pressure within the high-pressure braking system has exceeded the maximum allowable threshold.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5710SL
• 5711SL
• 5712SL
• 5713SL
• 6465 (Tier 2)
• 6475 (Tier 3)
• 6480 (Tier 3)
• 7465 (Tier 2)
• 7475 (Tier 2)
• 7480 (Tier 2)
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 8650
• 8660
• 8670

1. 1

   Verify the Air Supply / Trailer Brake Pressure Sensor wiring for shorts that might cause a falsely high voltage reading.

2. 2

   Inspect the master cylinder and slave cylinders, checking that the brake pull rod and seals are in good condition, as worn components can cause system malfunctions.

3. 3

   Verify that the system is using the correct fluid (LHM hydraulic fluid, not standard automotive brake fluid).

1. 1

   Depressurize the system

   Ensure the tractor is off and the high-pressure brake system (which operates at up to 18.5 bar) is safely depressurized before opening any lines.

2. 2

   Replace faulty component

   Remove the defective brake pressure sensor or master cylinder. When installing a new master cylinder, ensure the precision-machined bore and heavy-duty seals are properly aligned.

3. 3

   Bleed the brakes

   After installing new hydraulic components, thoroughly bleed the entire brake system to remove all air bubbles. Start the bleeding process with the wheel cylinder that is farthest from the master cylinder.

4. 4

   Clear codes

   Once the repair is complete and the system is bled, use a diagnostic tool to clear the 14.01.05 fault code from the TRANS1 module.