Overview
| CODE | REASON | EFFECT |
| Fault Code: 3712 PID: SPN: 5246 FMI: 0/0 LAMP: Red SRT: |
Critical SCR related fault codes have been active for an extended period of time and require immediate attention.
|
Vehicle speed will be limited to 8 km [5 miles] per hour. |
Circuit Description
The ECM continuously monitors the engine’s fault code status to determine if any fault codes critical to successful engine operation are active.
Component Location
The ECM mounting location varies, depending on the engine model, and may be mounted either on or off the engine.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the engine is running.
Conditions for Setting the Fault Codes
The Engine Control Module (ECM) detected 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 Active
- The ECM illuminates the red STOP ENGINE lamp immediately after the diagnostic runs and fails.
- Engine torque will be reduced.
Vehicle speed will be limited to 8 km [5 mi] per hour.
Conditions for Clearing the Fault Code
- This fault code will go inactive once all other active fault codes have been addressed. Refer to the appropriate fault code troubleshooting tree.
- The ECM will turn off the red STOP ENGINE lamp immediately after the diagnostic runs and passes.
Shop Talk
This 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.
Troubleshooting Summary
Solution: S00001420
Verification
Conditions
- Turn keyswitch ON.
- Connect the recommended Cummins® electronic service tool or equivalent.
Action
- Use the recommended Cummins® electronic service tool or equivalent to read the fault codes.
Specification
Before troubleshooting this fault code, troubleshoot any fault code that is active or has more than one inactive count within the last 25 engine operating hours from the following list:
- Aftertreatment diesel exhaust fluid system: 1682, 1683, 1685, 1713, 2976, 3238, 3241, 3258, 3261, 3423, 3425, 3563, 3572, 3574, 3575, 3596, 4156, 4169, 4769
- Aftertreatment diesel exhaust fluid dosing unit: 3558, 3559, 3569
- Aftertreatment diesel exhaust fluid dosing valve: 3567, 3568
- Aftertreatment NOx: 3232, 3682, 3748
- Aftertreatment SCR: 3151
Linked Solutions
- None
Repair
- Perform a search on the appropriate fault codes.
Validation
- None
Solution: S00010289
Verification
Conditions
- Turn keyswitch ON.
- Connect the recommended Cummins® electronic service tool or equivalent.
Action
- This solution is for information only stating that an engine derate has occurred.
Specification
- This solution is information only.
Linked Solutions
- None
Repair
- This fault code is for information only.
- No repair is necessary.
Validation
- None
If all steps have been completed and no root cause has been identified, then follow the technical escalation process.