Fendt 0.1.57 – Engine Control Unit (ECU): B092 - Sensor, charge air pressure/temperature

The engine control unit detects a cable break, a short circuit, or that the boost pressure/charge air temperature is outside the setpoint range, resulting in no monitoring and forcing the engine into a reduced power mode.

• 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)
• 916
• 920
• 924
• 926
• 930
• 936

1. 1

   Locate the B092 sensor on the front of the engine.

2. 2

   Inspect the 4-pin separation point/connector X1661 for corrosion, moisture, or backed-out pins.

3. 3

   Verify wiring integrity using a multimeter (Pin 1: Ground, Pin 2: Temp Signal, Pin 3: Supply voltage, Pin 4: Pressure Signal).

4. 4

   Connect SERDIA or FENDIAS diagnostic tool to read live data for charge air temperature and boost pressure to confirm if the sensor is reading out of bounds.

1. 1

   Cool down engine

   Turn off the tractor, remove the key, and allow the engine to cool down, as the charge air pipes and engine block will be hot.

2. 2

   Locate sensor

   Locate the B092 charge air pressure/temperature sensor on the front of the engine block/intake manifold.

3. 3

   Disconnect wiring

   Disconnect the 4-pin X1661 electrical connector from the sensor.

4. 4

   Remove faulty sensor

   Unbolt/unscrew the faulty B092 sensor from its mounting port.

5. 5

   Clean mounting port

   Clean the mounting port surface to ensure a good seal for the new sensor.

6. 6

   Install new sensor

   Install the new replacement sensor and torque it to the manufacturer's specifications.

7. 7

   Reconnect wiring

   Reconnect the 4-pin electrical connector, ensuring it clicks securely into place.

8. 8

   Clear fault codes

   Connect the SERDIA diagnostic software to the tractor and clear the stored KHD engine control faults (associated KWP codes often include FC:0020, 0021, 0095, or 0096).

9. 9

   Verify repair

   Start the engine and verify that the fault code 0.1.57 does not return and that the tractor has regained full power.