Description:

Similar to ECU 000189.00, this code, ECU 000189.31, indicates that the condition requiring an engine speed derate persists. This ongoing issue requires immediate attention to prevent long-term damage to the engine.

Reaction:

Continued operation in derated mode limits engine performance to protect against potential damage under adverse conditions.

Recommendations:

• Comprehensive Engine Diagnostic: Conduct a thorough examination of the engine and associated systems to determine why the derate condition persists.
• Address Persistent Issues: Focus on fixing long-standing or complex problems that might cause repeated derating.
• Reset and Recalibrate the ECU: After fixing the issues, ensure the ECU settings are correct and recalibrated to normal operating conditions.
• Ongoing Monitoring: Keep a close watch on engine performance to catch any recurrence early.

Note:

Persistent engine derating conditions indicate serious underlying problems that require immediate and thorough investigation and remedy to ensure reliable engine operation and prevent permanent damage.