Overview
| CODE | REASON | EFFECT |
| Fault Code: 4259 PID: SPN: 5742 FMI: 11/11 LAMP: Amber SRT: |
Intermittent battery voltage supply detected at the aftertreatment diesel particulate filter temperature sensor module.
|
Possible reduced engine performance. |
Circuit Description
The aftertreatment exhaust gas temperature sensor module is a smart device that communicates with the engine control module via the J1939 data link. The aftertreatment exhaust gas temperature sensor module performs its own internal diagnostics and reports malfunctions back to the engine control module using the J1939 data link. The aftertreatment exhaust gas temperature sensor module is used to measure the aftertreatment diesel oxidation catalyst intake temperature, aftertreatment diesel particulate filter intake temperature, aftertreatment diesel particulate filter outlet temperature, and aftertreatment SCR outlet temperature. The temperature probes are permanently attached to the aftertreatment exhaust gas temperature sensor module and can not be replaced individually.
Component Location
The aftertreatment exhaust gas temperature sensor module is located on the aftertreatment catalyst.
Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position or when the engine is running.
Conditions for Setting the Fault Codes
The Engine Control Module (ECM) detected an intermittent battery voltage supply to the aftertreatment exhaust gas temperature sensor module resulting in an internal reset of the module.
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.
- Active and stationary regeneration of the diesel particulate filter will be disabled.
- Engine torque will be reduced if the engine is operated for an extended period of time with this fault active.
Conditions for Clearing the Fault Code
- To validate the repair, perform a key cycle, start the engine and let it idle for 1 minute.
- The fault code status displayed by the recommended Cummins® electronic service tool or equivalent will change to INACTIVE immediately after the diagnostic runs and passes.
- The ECM will turn off the amber CHECK ENGINE lamp immediately after the diagnostic runs and passes.
- 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.
- The “Reset All Faults” command in the recommended Cummins® electronic service tool or equivalent can be used to clear active and inactive faults, as well as extinguish the MIL for OBD applications.
Shop Talk
This fault code sets when the ECM detects an internal reset of the sensor. This internal reset is caused by an intermittent battery voltage supply. This fault code indicates that an intermittent wiring problem has been detected. All wiring and connectors should be closely inspected for intermittent connections.
Troubleshooting Summary
Solution: S00000201
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:
- Voltage: 441, 442, 596, 597, 598
- Aftertreatment DPF: 4151, 4162
Linked Solutions
- None
Repair
- Perform a search on the appropriate fault codes.
Validation
- None
Solution: S00000941
Verification
Conditions
- Turn keyswitch OFF.
- Disconnect the aftertreatment DPF temperature sensor module from the OEM wiring harness.
Action
- Inspect the pins and connectors for damage.
- Visually inspect the batteries and the battery cable connections for corrosion.
- Turn keyswitch ON.
- Measure the voltage between the aftertreatment DPF temperature sensor module battery voltage SUPPLY circuit and the aftertreatment DPF temperature sensor module RETURN circuit at the aftertreatment DPF temperature sensor module wiring harness connector.
Check the voltage at key ON, while cranking the engine, and with the engine at idle.
For general voltage measurement techniques.
Specification
- If voltage is greater than 10-VDC (For 12 volt systems) or voltage is greater than 20-VDC (For 24 volt systems) an intermittent connection has been detected at the aftertreatment DPF temperature sensor module.
Linked Solutions
- None
Repair
Repair or replace only the components that were found to be out of specification.
- Troubleshoot the OEM wiring harness, and all interconnects.
Validation
- 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.
- Connect all components
- Connect the recommended Cummins® electronic service tool or equivalent.
- 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.
Solution: S00001068
Verification
Conditions
- Turn keyswitch OFF.
- Disconnect the aftertreatment DPF temperature sensor module from the OEM wiring harness.
Action
- Inspect the pins and connectors for damage.
- Turn keyswitch ON.
- Measure the voltage from the aftertreatment DPF temperature sensor module battery voltage SUPPLY pin of the OEM wiring harness to engine block ground.
- Refer to the circuit diagram or wiring diagram for connector pin identification.
For general voltage measurement techniques.
Specification
- If voltage is less than 10-VDC (For 12 volt systems) or voltage is less than 20-VDC (For 24 volt systems) an open circuit has been detected in the aftertreatment DPF temperature sensor module battery voltage SUPPLY circuit.
- If voltage is greater than 10-VDC (For 12 volt systems) or voltage is greater than 20-VDC (For 24 volt systems) an open circuit has been detected in the aftertreatment DPF temperature sensor module battery voltage RETURN circuit.
Linked Solutions
- None
Repair
Repair or replace only the components that were found to be out of specification.
- Troubleshoot the OEM wiring harness, and all interconnects.
Validation
- 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.
- Connect all components
- Connect the recommended Cummins® electronic service tool or equivalent.
- 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.
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.
If all steps have been completed and no root cause has been identified, then follow the technical escalation process.