Massey Ferguson 04.00.95 – TRANS1: Issue With Range 1 Engaged Switch And Range Solenoid 1 (TRANS1)

This code indicates a discrepancy or communication failure between the Range 1 Engaged Switch and Range Solenoid 1. The transmission controller is detecting that the physical state of the Range 1 switch does not match the commanded state of the Range 1 solenoid, pointing to an electrical fault, a stuck solenoid, or a failed switch.

• 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
• 5709
• 5710
• 5711
• 4700 Series
• 5400 Series
• 6400 Series
• 6600 Series
• 6700 Series
• 7600 Series

1. 1

   Inspect the wiring harness connecting the TRANS1 module to the Range 1 Engaged Switch and Range Solenoid 1 for chafed wires, corrosion, or loose pins at the connectors.

2. 2

   Unplug Range Solenoid 1 and test its internal resistance using a multimeter. Verify it is receiving the correct supply voltage from the TRANS1 module when Range 1 is commanded.

3. 3

   Test the Range 1 Engaged Switch for proper continuity. Verify that the switch physically changes state (open/closed) when the transmission shifts into Range 1.

4. 4

   Check the transmission fluid level and condition. Contaminated fluid can cause the solenoid spool valve to stick mechanically even if the electrical circuit is intact.

1. 1

   Power Down

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

2. 2

   Locate Components

   Locate the transmission control valve block (usually mounted on the side of the transmission housing). Identify Range Solenoid 1 and the Range 1 Engaged Switch.

3. 3

   Clean the Area

   Thoroughly clean the area around the solenoid and switch to prevent dirt from entering the transmission hydraulic system.

4. 4

   Replace Faulty Component

   If the solenoid is faulty: Remove the retaining bolt/clip holding the solenoid in place. Carefully pull the solenoid cartridge out. Lubricate the O-rings on the new solenoid with clean transmission fluid and install it. Torque the retaining bolt to OEM spec. If the switch is faulty: Unscrew the indirect transmission switch, ensuring you catch any minor fluid loss, and thread in the replacement switch.

5. 5

   Reconnect

   Reconnect the electrical harnesses, ensuring the weather-pack seals are seated correctly.

6. 6

   Reassemble and Test

   Reconnect the battery. Clear the 04.00.95 fault code from the TRANS1 module using a diagnostic tool. Start the tractor, check for leaks, and perform a test drive, shifting through the ranges to ensure Range 1 engages smoothly and the code does not return.