ECU 000641.16 – Turbocharger Actuator Temperature Moderately High. John Deere System Advisory.

ECU 000641.16 (ECU 641.16)

Code: 000641.16

Shortcode: 641.16

Description:

Error code ECU 000641.16 is triggered when the VGT actuator detects that its internal temperature is moderately high, slightly exceeding the defined threshold. This condition can be caused by operational stress, cooling issues, or other environmental factors.

Reaction:

The ECU may adjust engine parameters or reduce turbocharger activity to manage the increased temperature and prevent damage to the actuator.

Recommendations:

  • Inspect Cooling System: Ensure the turbo actuator coolant line is not pinched and is fully seated onto the steel line on the left side of the engine. Verify that the coolant system functions correctly.
  • Check for Obstructions: Look for any obstructions or debris around the actuator that could impede cooling airflow.
  • Monitor Temperature Levels: Use diagnostic tools to monitor the actuator’s temperature and ensure it remains within acceptable limits.
  • Address Environmental Factors: Ensure that the engine compartment has adequate ventilation and that heat sources are managed effectively.
  • Reset ECU and Verify Temperature: After addressing the issue, reset the ECU and monitor the actuator temperature to ensure it returns to normal levels.

Note:

Proper cooling and ventilation are essential for preventing excessive temperatures in the VGT actuator, ensuring reliable turbocharger operation and engine performance.


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