Paccar

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.

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.

Each fuel injector has a specific barcode. The barcode data contains specific injector information. This barcode information needs to be entered into the ECM with INSITE™ electronic service tool. If an engine is found to have incorrect injector barcode values, the correct injector barcode values must be entered. The engine symptom of incorrect barcode values can include rough idle. The factory installed injector barcode values can be found in QuickServe™ Online by entering the correct engine serial number (ESN), selecting Service, and then Engine Dataplate. The correct injector barcode values for that ESN are contained in the engine dataplate section. If the engine has had a previous repair involving the replacement of injectors, the valve cover must be removed to determine the injector barcodes values on the replacement injectors. Use INSITE™ electronic service tool to enter the barcode values into the ECM for this fault code to go inactive.

Possible repairs:

1)If the engine has had a previous repair involving the replacement of injectors, the valve cover must be removed to determine the injector barcodes values on the replacement injectors.

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 this fault code is active and there has been damage to the aftertreatment system, the permit switch may have prevented the aftertreatment system from performing a mobile (active) regeneration. Consult with the OEM if the aftertreatment system has failed due to the permit switch.

Possible repairs:

1)If necessary, recalibrate the ECM.

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.

If this fault code can be triggered when fuel dilution of the lubricating oil is possible. Change the engine lubricating oil and clear the fault code using INSITE™ electronic service tool to reset the Maintenance Monitor feature.

Possible repairs:

1)Change the engine lubricating oil.

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.

Fault Code 281 will most likely come active while operating at a steady state loaded condition. At this condition, commanded fuel pressures are highest and the pump’s pressure balance is affected the most.

If a high pressure seal has failed, pump head drain flow will be excessive. If seal damage has progressed far enough, the engine may not start because of an inability to develop fuel rail pressure.

If the engine will not start, there are two indications that the pump head has malfunctioned:

•The drain flow will be excessive. This can be measured while cranking the engine. Use the following procedure in the ISC and ISL CM2150 Service Manual, Bulletin 4021569. Refer to Procedure 005-227 in Section 5. Use the following procedure in the ISLe CM2150 Service Manual, Bulletin 4021630. Refer to Procedure 005-227 in Section 5.
•The pumping plungers are broken or mechanically stuck. This can be checked by visual inspection. Use the following procedure in the ISC and ISL CM2150 Service Manual, Bulletin 4021569. Refer to Procedure 005-227 in Section 5. Use the following procedure in the ISLe CM2150 Service Manual, Bulletin 4021630. Refer to Procedure 005-227 in Section 5.
If the engine oil level is rising due to the oil and Fault Code 281 is active, the pump head has malfunctioned and must be replaced.

Possible repairs:

1)Replace the fuel gear pump module.
2)Replace the high pressure fuel pump head.
3)If necessary, calibrate the ECM.

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.

This fault code is triggered when the EGR valve is closed during an active regeneration of the aftertreatment diesel particulate filter. No failure of the aftertreatment system has occurred. Closing the EGR valve increases the exhaust temperature and speeds up the rate of regeneration of the aftertreatment diesel particulate filter. No troubleshooting of the aftertreatment system is necessary. This fault code is for information only.

No repair is necessary.

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.

When this fault code is active, some multiplexed devices may not function as desired.

Possible causes:

1)When the ECM is set up properly (components enabled and OEM VECU source addressed correctly) to receive information from an OEM VECU, but the OEM VECU is actually transmitting a message that says that component is not available for multiplexing. This can be caused when a multiplexed component is enabled in the Cummins® ECM, but the OEM VECU source address of the VECU transmitting the component message is incorrect in the Cummins® ECM, or the OEM VECU is not set up to transmit the multiplexed component message.
2)This fault can also be caused by a malfunctioning J1939 Data link connection between the OEM VECU and Cummins® ECM, a malfunctioning connection between the component and the OEM VECU, malfunctioning OEM VECU or malfunctioning Cummins® ECM. It may be necessary to contact the OEM for proper multiplexing configuration.
It is possible to use INSITE™ electronic service tool to monitor multiplexed components.

Possible repairs:

1)Repair or replace the OEM harness.
2)Replace the ECM.

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.

This fault can occur when the ECM is set up properly (components enabled and OEM VECU source addressed correctly) to receive information from an OEM VECU, but the OEM VECU is actually transmitting a message that says that component is not available for multiplexing.

It is possible to use INSITE™ electronic service tool to monitor multiplexed components.

Possible repairs:

1)Replace the OEM harness.
2)Replace the ECM.

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.

This fault can occur when the OEM VECU detects an error on the accelerator. The ECM has been set up properly (components enabled and OEM VECU source addressed correctly) to receive multiplexed information for the idle validation switch states and accelerator position over the J1939 datalink from an OEM VECU, and the OEM VECU is transmitting the message for that component.

The three types of errors that can occur for this fault are:

1)When the accelerator is depressed and the OEM VECU reads accelerator position as greater than 0 percent but the idle validation switch indicates it is in the idle position, this fault status is transmitted to the Cummins® engine ECM on the J1939 datalink, which causes this fault to occur in the Cummins® engine ECM.
2)When the accelerator is released and the OEM VECU reads accelerator position as 0 percent, but the idle validation switch indicates it is not in the idle position. This fault status is transmitted to the Cummins® engine ECM on the J1939 datalink, which causes this fault to occur in the Cummins® engine ECM.
3)The OEM VECU determines that the accelerator signal line is shorted high or shorted low.

Note: It is still possible to get a Fault Code 285 or 286 if there is an incorrect setup in the OEM VECU or Cummins® engine ECM, for other components, or if the accelerator and idle validation switch, or if the datalink is damaged. The OEM configurations must multiplex the accelerator and idle validation switch inputs together to allow the use of the J1939 multiplexing and limp home feature for these components. INSITE™ electronic service tool can be used to monitor multiplexed components.

Possible repairs:

1)Replace the OEM harness.