Cummins ISB6.7 CM2350 (2013-17) Fault Code: 2754 PID: 81 SPN: 81 FMI: 16 Engine Diesel Particulate Filter Intake Pressure- Data Valid But Above Normal Operating Range- Moderately Severe Level

Cummins ISB6.7 CM2350 (2013-17) Fault Code: 2754 PID: 81 SPN: 81 FMI: 16 Engine Diesel Particulate Filter Intake Pressure- Data Valid But Above Normal Operating Range- Moderately Severe Level

Circuit Description
The engine aftertreatment system monitors the soot load in the aftertreatment diesel particulate filter. Under normal operating conditions, the aftertreatment diesel particulate filter is self-cleaning, where soot is converted to carbon dioxide, nitrogen, and water. Under light load operating conditions, it can be necessary to perform a stationary regeneration of the aftertreatment diesel particulate filter. The soot load in the aftertreatment diesel particulate filter is estimated, using the aftertreatment differential pressure sensor and the calculated soot output of the engine.

This fault code is logged when the sensors in the aftertreatment system indicates soot accumulation inside the diesel particulate filter is happening at a higher rate than under normal conditions. This indicates that the smoke (soot) being produced by the engine is higher than normal.

Component Location
The aftertreatment diesel particulate filter is located in the exhaust system and is installed by the original equipment manufacturer (OEM). Refer to the OEM service manual.

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 soot load of the aftertreatment diesel particulate filter had exceeded the maximum operating limits.

Action Taken When the Fault Code is Active
The ECM illuminates the amber CHECK ENGINE lamp immediately when the diagnostic runs and fails.

Conditions for Clearing the Fault Code
The Engine Control Module (ECM) will disable the fault code immediately after the diagnositc runs and passes or after a keyswitch cycle.

Possible causes:
1) Boost leaks in the charge-air cooler plumbing
2) A malfunction of the variable geometry turbocharger (VGT)
3) A malfunction of the exhaust gas recirculation (EGR) valve
4) A malfunctioning in-range EGR differential pressure sensor
5) A malfunctioning in-range boost pressure sensor
6) A malfunctioning in-range barometric pressure sensor
7) A cylinder misfire or overfueling.