ECU 005246.14 – SCR Operator Stage #4 Derate Notification. John Deere System Advisory.

ECU 005246.14 (ECU 5246.14)

Code: 005246.14

Shortcode: 5246.14


This informational fault code notifies the operator that the Selective Catalytic Reduction (SCR) system is in Stage #4 derate. It provides a warning about how long the operator has before the machine reaches its final derate state, which can significantly limit engine performance.


The ECU issues an informational notification to the operator to prepare for the machine’s final derate state. This stage of derate can lead to significant reductions in engine power and performance if not addressed promptly.


  • Review Operator Manual: Check the operator manual for detailed instructions and timelines regarding the SCR derate stages.
  • Inspect SCR System: Verify that the SCR system is functioning correctly. Look for any issues that may be causing the derate, such as low DEF levels or system faults.
  • Address SCR Faults: If there are any active SCR-related fault codes, follow the diagnostic procedures to resolve them.
  • Refill DEF Tank: Ensure that the Diesel Exhaust Fluid (DEF) tank is adequately filled with high-quality DEF.
  • Monitor SCR Performance: Keep an eye on the SCR system’s performance and address any warnings or alerts promptly.
  • Reset ECU and Monitor System: After addressing the issue, reset the ECU to clear the notification and monitor the system to ensure proper operation.


Staying ahead of SCR system maintenance and addressing any issues promptly can prevent reaching critical derate stages and maintain optimal engine performance.

Control Units: John Deere

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