Description:

This error code, EPC 000084.19, indicates that the BCU (Body Control Unit) control unit has transmitted an incorrect message regarding the wheel speed sensor status via the CAN BUS. This error can occur under the following conditions:

• The wheel speed sensor is not available due to incorrect configuration.
• There is a sensor signal fault caused by a circuit problem at the wheel speed sensor.

Reaction:

When this error is detected, the transmission control system may not receive accurate wheel speed data, potentially leading to incorrect gear shifts and overall suboptimal performance. This can affect the tractor’s drivability and efficiency.

Recommendations:

Check Sensor Configuration:

• Verify the configuration settings of the wheel speed sensor in the BCU. Ensure that the sensor is correctly configured and recognized by the control unit.

Inspect and Repair Sensor Circuit:

• Examine the circuit associated with the wheel speed sensor for any issues such as broken wires, loose connections, or signs of corrosion. Repair or replace any faulty components.

Test Wheel Speed Sensor:

• Use diagnostic tools to test the functionality of the wheel speed sensor. Ensure that it is providing accurate and reliable signals.

Verify CAN BUS Communication:

• Inspect the CAN BUS system for any communication issues that might be causing incorrect messages. Check for physical damage, loose connections, or interference in the signal transmission.

Update or Reflash Control Unit Software:

• Ensure that the BCU control unit software is up-to-date. If necessary, reflash the software to correct any configuration or communication issues.

Perform System Reset:

• After addressing the above issues, perform a system reset to ensure that all changes take effect and that the control unit correctly receives and processes wheel speed data.

Note:

Regular checks and maintenance of the wheel speed sensors, their circuits, and the CAN BUS system are crucial for ensuring accurate data transmission and preventing such faults. Keeping the control unit software up-to-date can also help mitigate communication errors. If the problem persists, further diagnostics may be necessary to uncover deeper issues.