Description:

This error code indicates that the ECU does not detect sufficient EGR flow when the EGR valve is open, suggesting potential issues such as clogging, restricted flow, or a malfunctioning valve.

Reaction:

The control software may limit engine performance to prevent damage or inefficiency due to insufficient EGR flow, impacting overall vehicle operations.

Recommendations:

• Check EGR Valve and Passages for Blockages: Inspect the EGR valve and associated passages for any signs of clogging or obstruction that might restrict flow.
• Test EGR Valve Operation: Ensure that the EGR valve opens fully and functions as intended.
• Clean or Replace EGR Components: Clean any blocked passages or replace the EGR valve if it is defective.
• Reset ECU and Conduct Performance Checks: After addressing the issue, reset the ECU to clear the diagnostic code and conduct thorough performance checks to verify that the EGR flow is within the desired range.

Note:

Adequate EGR flow is essential for reducing NOx emissions and helping the engine run efficiently. Ensuring the EGR system is clean and functional is key to avoiding performance issues.