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Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 4259 PID: SPN: 5742 FMI: 11 Aftertreatment Diesel Particulate Filter Temperature Sensor Module- Root Cause Not Known

Circuit Description
The aftertreatment diesel particulate filter temperature sensor module is a smart device that communicates with the engine control module via the J1939 data link. The aftertreatment diesel partculate filter temperature sensor module performs its own internal diagnostics and reports malfunctions back to the engine control module using the J1939 data link. The aftertreatment diesel particulate filter temperature sensor module is used to measure the aftertreatment diesel oxidation catalyst intake temperature, aftertreatment diesel particulate filter intake temperature, and aftertreatment diesel particulate filter outlet temperature. The temperature probes are permanently attached to the aftertreatment diesel particulate filter temperature sensor module and can not be replaced individually.

Component Location
The aftertreatment diesel particulate filter temperature sensor module is mounted on the aftertreatment diesel particulate filter.

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 diesel particulate filter 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 INSITE™ electronic service tool 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 INSITE™ electronic service tool 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.

Possible Cause:
1) Loose Connections
2) ECM calibration

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