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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.
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, recalibrate the ECM.
The aftertreatment system will try to meet target temperatures at the outlet of the diesel oxidation catalyst during a regeneration event. This fault code is activated when the control system detects that excessive fuel is entering the exhaust system, in an attempt to meet the target temperatures at the diesel oxidation catalyst outlet temperature sensor.
Possible causes:
1)Soot plugging the front face of the aftertreatment diesel oxidation catalyst
2)Engine oil or fuel contamination of the aftertreatment diesel oxidation catalyst
3)A cracked or contaminated aftertreatment diesel oxidation catalyst
4)A leaking exhaust system between the turbocharger and the aftertreatment diesel oxidation catalyst
5)The duty cycle of the vehicle is not high enough to provide adequate exhaust temperatures for a complete regeneration event.
Possible repairs:
1)Repair or replace the damaged exhaust system component.
2)Perform the stationary regeneration procedure
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.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2638 PID: SPN: 3050 FMI: 13 Catalyst Efficiency – Out of Calibration. The temperature increase across the aftertreatment diesel oxidation catalyst is lower than expected.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2637 PID: SPN: 3050 FMI: 11 Catalyst Face Plugged – Root Cause Not Known. The front face of the aftertreatment diesel oxidation catalyst has been detected to be plugged with soot.
PACCAR PX-8 CM2150 (2007-09) Fault Code: 2636 PID: SID 027 SPN: 641 FMI: 9 VGT Actuator Driver Circuit – Abnormal Update Rate. No communications on the J1939 data link between the engine ECM and the smart VGT controller.