ECU 002630.00 – Exhaust Gas Recirculation (EGR) Fresh Air Temperature Extremely High. John Deere System Advisory.

ECU 002630.00 (ECU 2630.00)

Code: 002630.00

Shortcode: 2630.00


Error code ECU 002630.00 indicates that the exhaust gas recirculation (EGR) fresh air temperature, or charge air cooler outlet temperature, is extremely high, exceeding the specified temperature range. This condition can lead to inefficient EGR operation and potential engine overheating.


The ECU may reduce or shut off engine functions to prevent damage from overheating, affecting overall engine performance and emissions control.


  • Inspect EGR System: Check the EGR system, particularly the charge air cooler and associated components, for clogs, leaks, or damage.
  • Monitor Temperature Sensors: Verify the accuracy of temperature sensors related to the EGR and charge air cooler. Replace sensors if they provide erroneous readings.
  • Clean or Replace Charge Air Cooler: If the charge air cooler is dirty or damaged, clean or replace it to ensure it efficiently cools the incoming air.
  • Check for Software Updates: Ensure that the ECU software is up to date, as updates may correct algorithms that misinterpret sensor data.
  • Reset ECU and Confirm Functionality: After addressing potential issues, reset the ECU to clear the error code and confirm that the EGR system functions correctly under normal operation conditions.


Maintaining the EGR and charge air cooling systems is critical for engine performance, particularly for meeting emissions standards and preventing overheating. Regular inspections and timely intervention are key to avoiding severe engine damage.

Control Units: John Deere

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