Fendt 1.2.B0 – A051 - ECU, engine control unit (EDC 7): CAN message, no throttle pedal or outside setpoint range.

The Engine Control Unit is not receiving a valid CAN bus signal from the foot throttle pedal sensor (Sensor B055), or the signal being received is outside the calibrated setpoint range. It can also point to a communication driver initialization error resulting in limited CAN bus communication.

• 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
• Fendt 300 Vario COM III
• Fendt 400 Vario COM III
• Fendt 700 Vario COM III
• Fendt 800 Vario COM III
• Fendt 900 Vario COM III (Models 922, 924, 927, 930, 933, 936)

1. 1

   Refer to Fendt wiring diagram Sheet 36 and check the wiring harness between the foot throttle sensor (B055) and the A051 Engine Control Unit for breaks, chafing, or short circuits.

2. 2

   Check the combination sensor connections on the foot throttle (specifically PIN 3 to PIN 6) for corrosion or loose fitment.

3. 3

   Verify if other CAN bus communication errors are present (such as 1.1.B0 or 1.1.A1), which would indicate a broader CAN network failure rather than an isolated pedal issue.

4. 4

   Connect to the EDC diagnostic connector (X412) to read live parameters from the engine control module to see if the pedal registers any voltage sweep when pressed.

1. 1

   Resolve Wiring Issues

   Repair any broken wires or clean corroded pins at the B055 throttle pedal connector and the A051 ECU separation points (X1466, X1671, X1672).

2. 2

   Replace the Sensor

   If the wiring is intact but the pedal signal remains dead or out of range, replace the B055 foot throttle pedal sensor.

3. 3

   ECU Reprogramming

   If the pedal is functioning but the CAN communication driver fails to initialize, the A051 ECU may require EOL (End of Line) reprogramming.

4. 4

   Clear the Fault Code

   Fendt 1.2.xx series EDC faults must be manually deleted from the engine control unit after the physical repair is completed. Use the SERDIA diagnostic software to clear the error (Internal SERDIA Fault Code: FC:005E).