TROUBLESHOOTING SHACK

*Important Note-Before starting the diagnosis process, verify that the ECM calibration is up to date. An outdated ECM calibration can lead to issues with sensors and modules.

Cummins Fault Code: 3712 SPN: 5246 Aftertreatment SCR Operator Inducement – Data Valid But Above Normal Operating Range – Most Severe Level

Cummins Fault Code: 3714 SPN: 1569 Engine Protection Torque Derate – Condition Exists

Code Analysis:

When encountering these fault codes, it indicates that the engine is in a derated state. These “information only” codes serve as alerts, informing us that the engine has initiated protection measures due to an existing issue that requires resolution.

Troubleshooting Steps:

Check for Related Active Codes:

Prior to addressing codes 3712 and 3714, it is crucial to examine whether there are other active codes related to the aftertreatment system (DEF system, DEF Dosing, NOx, SCR), intake, or turbo. If other codes are present, they must be addressed before attempting to clear codes 3712 and 3714.

Verify ECM Calibration Version:

Once all necessary repairs are completed and only codes 3712 and/or 3714 persist, it is essential to ensure that the ECM calibration version is up-to-date. If the ECM is not current, it should be promptly updated.

Test Drive to Identify Unresolved Issues:

After confirming the ECM is up-to-date, conducting a test drive is recommended. The purpose is to potentially trigger any additional fault codes related to underlying issues that might be causing the information-only codes to persist.

Calibrating the ECM as a Last Resort:

In rare situations where no additional codes are triggered after the test drive, technicians may consider calibrating the ECM with its current version as a last resort. However, this approach is not recommended due to the inherent risks involved. Calibration failure could lead to a bricked ECM, rendering it inoperable.