Overview
| CODE | REASON | EFFECT |
| Fault Code: 2692 PID: SPN: 3936 FMI: 2/2 LAMP: Amber SRT: |
The aftertreatment particulate matter sensor has detected a problem with the diesel particulate filter system.
|
Possible reduced engine performance. |
Circuit Description
The aftertreatment particulate matter sensor is a smart device and communicates with the engine control module (ECM) via the J1939 data link. The aftertreatment particulate matter sensor performs internal diagnostics and reports malfunctions back to the primary ECM using the J1939 data link. The particulate matter sensor is permanently attached to the particulate matter control module. They are serviced as a single component and can not be replaced individually. The aftertreatment particulate matter sensor is used to measure the soot emissions at the outlet of the aftertreatment system.
Component Location
The aftertreatment particulate matter sensor location can vary depending on engine application. It is usually located in the exhaust system at the outlet of the selective catalytic reduction (SCR) catalyst.
Conditions for Running the Diagnostics
This diagnostic runs when the aftertreatment SCR outlet temperature has been above a calibrated value for a calibrated period of time while the engine is running.
Conditions for Setting the Fault Codes
The aftertreatment particulate matter sensor detected soot emissions higher than a calibrated value.
Action Taken When the Fault Code is Active
- The ECM illuminates the amber CHECK ENGINE lamp and/or malfunction indicator lamp (MIL) after the diagnostic fails on two consecutive trips.
Conditions for Clearing the Fault Code
- For On-Board Diagnostics (OBD) engines, the ECM will extinguish the Malfunction Indicator Lamp (MIL) after three consecutive trips where the diagnostic runs and passes.
To validate the repair, perform the following steps in order:
- Use the “Reset All Faults” command in the recommended Cummins® electronic service tool or equivalent to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
- Use the recommended Cummins® electronic service tool or equivalent to perform the “Air Handling Performance Test” found in ECM Diagnostic Test.
Shop Talk
Possible causes of this fault code include:
- Malfunctioning aftertreatment particulate matter sensor
- Malfunctioning or damaged aftertreatment diesel particulate filter
Troubleshooting Summary
Solution: S00011009
Verification
Conditions
- Turn keyswitch OFF.
Action
- This solution is information only.
- ALL solutions displayed for this fault code must be performed.
- Continue to perform the verifications of ALL solution steps listed for this fault code regardless if a given solution is within specification or out of specification.
- If redirected in this troubleshooting to another fault code or symptom it is required to come back to this fault code troubleshooting and complete every step.
Specification
- This solution is information only.
Linked Solutions
- None
Repair
- If a resolution is found in any solution for this fault code, continue performing ALL solutions listed for this fault code.
Validation
- None
Solution: S00000205
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 Particulate sensor: 4143, 4144, 4153, 4154, 5577, 5578, 5579, 5581, 5582, 5583, 5584, 5792, 5793, 5837, 6642, 6643, 6644, 6645, 6646, 6647, 6648, 6649, 6651, 6652, 6653, 6688
- Aftertreatment DPF: 1993
Linked Solutions
- None
Repair
- Perform a search on the appropriate fault codes.
Validation
- None
Solution: S00009149
Verification
Conditions
- Reconnect previously disconnected components.
- Turn keyswitch ON.
- Connect the recommended Cummins® electronic service tool or equivalent.
Action
- Use the recommended Cummins® electronic service tool or equivalent.
- Perform the Air Handling Performance Test.
Specification
- If the Air Handling Performance Test does not pass, then reset the search to Air Handling Performance Test Did Not Pass. Only select the solution title that matches the error messages in the recommend Cummins® electronic service tool or equivalent.
- If the Air Handling Performance Test will not start, then reset the search to Air Handling Performance Test Did Not Start.
- If the Air Handling Performance Test does not complete, then reset the search to Air Handling Performance Test Did Not Complete.
Linked Solutions
- None
Repair
- No additional action is required for this solution.
Validation
- None
Solution: S00000443
Verification
Conditions
- Connect all components.
- 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.
- Use the recommended Cummins® electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
- Compare the ECM code and revision number in the ECM to the calibration revision listed in the ECM calibration revision history for applicable changes.
Specification
- If a calibration update for this fault code is available, the ECM calibration revision must be that revision or higher.
Linked Solutions
- None
Repair
- Prior to downloading the ECM calibration, check to see that all job images and all other troubleshooting has been documented as downloading an ECM calibration will remove the fault codes on the ECM.
- Download the updated ECM calibration code.
Validation
- Connect all components
- Connect the recommended Cummins® electronic service tool or equivalent.
- Disable the fault code.
- Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
- Verify that the fault code is no longer active.
- Check ECM Calibration Revision History
- Use the recommended Cummins® electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
- Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
- Refer to ECM Calibration Revision History Database.
Solution: S00007816
Verification
Conditions
- Turn keyswitch ON.
- Connect the recommended Cummins® electronic service tool or equivalent.
Action
- If the aftertreatment DPF has already been replaced during this repair, then disregard this solution.
- Use the recommended Cummins® electronic service tool or equivalent to read the fault codes.
Specification
- If the fault code is active or inactive with more than one count within the last 25 engine operating hours and no other fault codes have been logged, then proceed to the Repair section.
Linked Solutions
- None
Repair
- Replace aftertreatment DPF.
- Replace the aftertreatment particulate sensor.
Validation
- Connect all components
- Connect the recommended Cummins® electronic service tool or equivalent.
- Disable the fault code.
- Operate the engine within the “Conditions for Clearing the Fault Code” found in the Overview section of the troubleshooting procedure.
- Verify that the fault code is no longer active.
- Check ECM Calibration Revision History
- Use the recommended Cummins® electronic service tool or equivalent to find the current ECM code and revision number in the ECM.
- Compare the ECM code and revision number in the ECM to the calibration revisions listed in the ECM Calibration Revision History Database for applicable changes related to this fault code.
- Refer to ECM Calibration Revision History Database.
If all steps have been completed and no root cause has been identified, then follow the technical escalation process.