Cummins X15 CM2350 X116B Performance Series (2018 & Newer) Fault Code: 2754 PID: 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.
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
Soot accumulation within the diesel particulate filter occurred at a higher rate than under normal operating conditions.
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 fault code status displayed by INSITE™ electronic service tool will change to INACTIVE immediately after the diagnostic runs and passes.
Shop Talk
Possible causes of this fault code include:
Boost leaks in the charge-air cooler plumbing
A malfunction of the variable geometry turbocharger (VGT)
A malfunction of the exhaust gas recirculation (EGR) valve
A malfunctioning in-range EGR differential pressure sensor
A malfunctioning in-range boost pressure sensor
A malfunctioning in-range barometric pressure sensor
A cylinder misfire or overfueling.
Reference the appropriate OEM wiring diagram when troubleshooting circuits that utilize wiring supplied by the OEM.
For intermittent power supply and datalink communication issues with Aftertreatment Components, it is highly recommended that the OEM Power Distribution Center fuses and relays be thoroughly checked for loose, missing or intermittent connections.
Possible Cause:
1) Charge-air cooler failure
2) Barometric pressure sensor failure
3) Intake manifold pressure sensor failure
4) Exhaust manifold pressure sensor failure
5) Aftertreatment DPF differential pressure sensor failure
6) Fuel rail pressure relief valve failure
7) Loose injector high-pressure connector(s)
8) High-pressure connector failure
9) ECM calibration
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