Fendt 1.2.32 – A022 - ECU, EMR2: Charge air temperature warning threshold exceeded

The charge air temperature has become too high. If the temperature remains too high after a delay period, the engine control unit will automatically reduce the engine power output or use a substitute value to calculate the injected fuel quantity.

• 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
• Fendt 300 Vario (including COM III)
• Fendt 400 Vario / Farmer 400 (including COM III)
• Fendt 700 Vario / Favorit 700 (including COM III)
• Fendt 800 Vario (including COM III)
• Fendt 900 Vario / Favorit 900 (including COM III)

1. 1

   Check engine coolant level, as low coolant can contribute to excessive charge air temperatures

2. 2

   Inspect the radiator and intercooler for blockages, debris, or dirt that could restrict airflow

3. 3

   Inspect the cable connection to the B053 sensor for breaks, corrosion, or loose fittings

4. 4

   Run SERDIA diagnostics to monitor live data from the B053 sensor to see if the signal is out of range (signal too high or too low)

1. 1

   Allow engine to cool

   Allow the engine to cool down safely.

2. 2

   Clean radiator and intercooler

   Clean the radiator and intercooler fins thoroughly to restore proper cooling capacity.

3. 3

   Top up coolant

   Top up the engine coolant if the level is found to be low.

4. 4

   Clean sensor contacts

   Disconnect the wiring harness from the B053 charge air temperature / boost pressure sensor and clean the contacts.

5. 5

   Test and replace sensor

   Test the B053 sensor. If the sensor is providing an erratic signal, a signal out of range, or if the fault persists after cleaning the radiator and verifying the wiring, replace the B053 sensor.

6. 6

   Clear fault codes and test drive

   Clear the fault codes via the SERDIA diagnostic tool and test drive the tractor to ensure engine power is no longer being reduced.