Massey Ferguson 04.02.49 – TRANS: Transmission Filter Blockage Sensor Issue (TRANS)

The sensor monitoring the transmission/hydraulic oil filter is either detecting a restriction in fluid flow (a blocked filter) or the sensor itself/its circuit is malfunctioning and sending an erratic signal.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 6700 Series
• 6700S Series
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 5710SL
• 5711SL
• 5712SL
• 5713SL
• 4707
• 4708
• 4709
• 4710

1. 1

   Check fluid temperature — allow the tractor to reach normal operating temperature to rule out false warnings caused by cold, highly viscous oil.

2. 2

   Inspect the filter for debris — look closely for metal shavings or fibrous material, which can indicate internal brake discs have worn down to the metal.

3. 3

   Inspect sensor wiring — check the harness and connector on the right-hand side of the gearbox for corrosion, breaks, or loose connections.

1. 1

   Warm Up the Tractor

   Run the machine until the transmission fluid is warm to rule out cold-oil viscosity issues.

2. 2

   Drain the Fluid

   If the code remains, place a clean drain pan under the transmission and drain the hydraulic/transmission fluid.

3. 3

   Remove and Replace the Filter

   Unscrew the transmission/hydraulic filter housing. If heavy brake material or metal filings are found, stop—the entire rear-end system will need to be flushed, and the brakes must be replaced before operating the tractor again. If the filter is just normally dirty, proceed to replace it with a new OEM filter.

4. 4

   Test the Sensor

   If replacing the filter does not clear the 04.02.49 code, the sensor itself is likely faulty.

5. 5

   Replace the Sensor

   Disconnect the electrical harness from the blockage sensor. Unthread the sensor from the transmission/filter housing block. Install the new sensor, being careful not to overtighten, and reconnect the wiring harness.

6. 6

   Refill Fluid

   Refill the transmission with the correct specification of Universal Tractor Transmission Oil (UTTO).

7. 7

   Clear Codes

   Cycle the ignition and test the tractor under load to ensure the fault code does not return.