ECU 003711.31 – Diesel Particulate Filter Active Regeneration Inhibited Due to Low Exhaust Gas Temperature. John Deere System Advisory.
ECU 003711.31 (ECU 3711.31)
Code: 003711.31
Shortcode: 3711.31
Description:
This code is set when active regeneration of the Diesel Particulate Filter (DPF) is inhibited due to the exhaust gas temperature being too low. The target temperature for the Diesel Oxidation Catalyst (DOC) inlet was not achieved during the exhaust temperature management process.
Reaction:
The ECU prevents active regeneration, leading to an accumulation of soot in the DPF. This can result in reduced engine performance, higher emissions, and potential damage to the DPF if not addressed.
Recommendations:
- Check Engine Load and Conditions: Ensure that the engine is running under sufficient load and conditions to reach the necessary exhaust gas temperatures for DPF regeneration.
- Inspect and Clean Exhaust System: Check for any blockages or restrictions in the exhaust system that may be preventing adequate temperature buildup. Clean or replace components as needed.
- Monitor and Test Temperature Sensors: Use diagnostic tools to check the accuracy of exhaust temperature sensors and replace any that are malfunctioning.
- Initiate Manual Regeneration: If the problem persists, manually initiate a DPF regeneration to reduce the soot level.
- Reset ECU and Verify Function: After resolving the issue, reset the ECU to clear the fault and verify that the system can perform active regeneration under the correct conditions.
Note:
Achieving and maintaining the proper exhaust gas temperature is essential for the effective regeneration of the DPF. Regular maintenance and timely troubleshooting can prevent issues that inhibit regeneration.