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PACCAR PX-8 CM2150 (2007-09) Fault Code: 2754 PID: SPN: 81 FMI: 16 Engine Particulate Filter Inlet Pressure – Data Valid but Above Normal Operational Range – Moderately Severe Level.

Verify the electronic control module (ECM) calibration is correct. Check the calibration revision history found on QuickServe® Online for applicable fixes to the calibration stored in the ECM. If necessary, calibrate the ECM.

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 faulty in-range EGR differential pressure sensor
5)A faulty in-range boost pressure sensor
6)A faulty in-range barometric pressure sensor
7)A cylinder misfire or overfueling.

Possible repairs:

1)Repair or replace the leaking component.
2)Clean or replace the charge air cooler
3)Replace the intake manifold pressure sensor.
4)Replace the barometric pressure sensor.
5)If necessary, calibrate the ECM.

PACCAR PX-8 CM2150 (2007-09) Fault Code: 2743 PID: SPN: 2743 FMI: 18 Aftertreatment Exhaust Gas Temperature 2 – Data Valid but Below Normal Operating Range – Moderately Severe Level. The temperatures in the aftertreatment system can not reach the required temperatures for stationary regeneration.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2742 PID: SPN: 2742 FMI: 17 Aftertreatment Exhaust Gas Temperature 2 – Data Valid but Below Normal Operating Range – Least Severe Level. The temperatures in the aftertreatment system can not reach the required temperatures for stationary regeneration.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2728 PID: SPN: 3556 FMI: 16 Aftertreatment Fuel Injector 1 – Data Valid but Above Normal Operational Range – Moderately Severe Level. Active regeneration of the aftertreatment diesel particulate filter has been detected to be ineffective.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2659 PID: 110 SPN: 110 FMI: 31 Engine Coolant Temperature – Condition Exists. The EGR valve was closed to reduce engine coolant temperature.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2646 PID: 110 SPN: 110 FMI: 31 Engine Coolant Temperature – Condition Exists. The EGR valve was closed to reduce engine coolant temperature.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2639 PID: SID 324 SPN: 3251 FMI: 0 Aftertreatment Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Least Severe Level. The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits.