Fendt 4.1.E2 – A002 - ECU, enhanced control: Pressure regulator control parameters in tractive power control not plausible (B008 / B039) or read incorrectly.

The electronic control system has detected that the stored parameters for the transmission's pressure regulator (ML - transmission adjustment) are invalid, implausible, or corrupted. This fault is directly tied to the readings or calibration values associated with two specific transmission sensors: B008 (High-pressure sensor 1) and B039 (High-pressure sensor 2).

• 409 Vario
• 410 Vario
• 411 Vario
• 412 Vario
• 711 Vario
• 712 Vario
• 714 Vario
• 715 Vario
• 716 Vario
• 717 Vario
• 718 Vario
• 916 Vario
• 920 Vario
• 924 Vario
• 926 Vario
• 930 Vario
• 411 Vario COM III
• 412 Vario COM III
• 413 Vario COM III
• 414 Vario COM III
• 415 Vario COM III
• 712 Vario COM III
• 714 Vario COM III
• 716 Vario COM III
• 718 Vario COM III
• 818 Vario COM III
• 820 Vario COM III
• 309 Vario
• 310 Vario
• 311 Vario
• 312 Vario
• 815 Vario
• 817 Vario
• 818 Vario
• 936 Vario
• 939 Vario

1. 1

   Verify the 12V power supply to the sensors via the A013 fuse board (Check Fuse 32 for B008 and Fuse 31 for B039)

2. 2

   Inspect the separation points and connectors for both sensors (X157 for B008 and X177 for B039) for corrosion, moisture, or broken wires

3. 3

   Locate the B008 and B039 sensors on the right side of the transmission, mounted on the valve block (requires removing the right rear wheel and metal cover panels)

4. 4

   Use the Variotronic Ti terminal (A008) or FENDIAS diagnostic software to monitor live pressure readings from B008 and B039 to see if they are reading 0 bar, maxing out, or fluctuating erratically

1. 1

   Access the Valve Block

   Safely lift and support the tractor, remove the right rear wheel, and take off the metal shielding panels to access the transmission valve block.

2. 2

   Resolve Hardware Faults

   If the diagnostic checks revealed a blown fuse (A013 board), damaged wiring harness, or a dead sensor (B008 or B039), replace the faulty component.

3. 3

   EOL Programming (Mandatory)

   The official Fendt fault code documentation explicitly states that the consequence/remedy for code 04.1.E2 is EOL programming (End-Of-Line programming). Because the parameters have become implausible or corrupted, the A002 ECU must be recalibrated.

4. 4

   Recalibration

   Connect the FENDIAS dealer diagnostic tool. Reload the transmission control parameters and perform the transmission calibration routine. Note: The B008 high-pressure sensor must be installed and functioning correctly to successfully calibrate the transmission.