Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3712 PID: 105 SPN: 5246 FMI: 0 Aftertreatment SCR Operator Inducement- Data Valid But Above Normal Operational Range- Most Severe Level

Circuit DescriptionThe ECM continuously monitors the engine’s fault code status to determine if any critical SCR related fault codes are active.

Component LocationThe ECM mounting location varies, depending on the engine model.

Conditions for Running the DiagnosticsThis diagnostic runs continuously when the engine is running.

Conditions for Setting the Fault CodesThe ECM detects that the engine has been operated for an extended amount of time with critical SCR faults active, and no repair action has been taken. This amount of time will vary, depending on which SCR faults are active.

Action Taken When the Fault Code is ActiveThe ECM illuminates the red STOP ENGINE lamp immediately when the diagnostic runs and fails.Immediate engine power derate.Vehicle speed will be limited to 8 km [5 miles] per hour.Conditions for Clearing the Fault CodeThis fault code will go inactive once all other active SCR related fault codes have been addressed. Refer to the appropriate fault code troubleshooting tree.The ECM will turn off the red STOP ENGINE lamp after the diagnostic runs and passes.

Shop TalkThis fault code is for information only, and indicates that an engine power derate and vehicle speed limit have been implemented in order to make sure that the critical SCR related fault codes that are presently active in the ECM are addressed as quickly as possible.

Possible Cause:1) ECM calibration

Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3697 PID: SID 254 SPN: 630 FMI: 12 Engine Control Module Calibration Memory- Bad Intelligent Device or Component
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3682 PID: 190 SPN: 190 FMI: 2 Aftertreatment Intake Nox Sensor Power Supply- Data Erratic, Intermittent, or Incorrect
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3681 PID: 411 SPN: 3228 FMI: 2 Aftertreatment Outlet Nox Sensor Power Supply- Data Erratic, Intermittent, or Incorrect
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3679 PID: SPN: 3361 FMI: 11 Aftertreatment Diesel Exhaust Fluid Dosing Unit- Root Cause Not Known
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3651 PID: SID 254 SPN: 3031 FMI: 18 Aftertreatment Diesel Exhaust Fluid Tank Temperature- Data Valid But Below Normal Operating Range- Moderatley Severe Level
Cummins ISX11.9 CM2250 (2010-12) Fault Code: 3649 PID: SPN: 5024 FMI: 10 Aftertreatment Intake Nox Sensor Heater- Abnormal Rate of Change
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