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Table 1
Diagnostic Trouble Codes for DPF Inlet
J1939 Code and Description CDL Code and Description Comments
3242-15
Aftertreatment 1 Diesel Particulate Filter Intake Gas Temperature High (1) E1008 (1)
Aftertreatment 1 Diesel Particulate Filter Intake Gas Temperature High (1) The temperature at the intake of the DPF exceeded a predetermined value.
Active regeneration is immediately disabled. The code is logged.
3242-16
Aftertreatment 1 Diesel Particulate Filter Intake Gas Temperature High (2) E1008 (2)
Aftertreatment 1 Diesel Particulate Filter Intake Gas Temperature High (2) The temperature at the intake of the DPF exceeded a predetermined value.
Active regeneration is immediately disabled. The code is logged.
Table 2
Diagnostic Trouble Codes for DPF Outlet
J1939 Code and Description ATA Code and Description Comments
3246-15
Diesel Particulate Filter Outlet Gas Temperature (bank 1) : High - Least Severe (1) 320-0
High DPF #1 Outlet Temperature The temperature at the outlet of the DPF exceeded 750 °C (1380 °F).
Active regeneration is immediately disabled. Engine power is derated. The code is logged.
These codes are usually caused by excessive fuel or oil in the DPF.
3246-16
Diesel Particulate Filter Outlet Gas Temperature (bank 1) : High - Moderate Severity (2) 320-11
DPF #1 Outlet Temperature very high The temperature at the outlet of the DPF exceeded 800 °C (1470 °F).
Active regeneration is immediately disabled. The Clean Gas Induction System (CGI) is turned off. Engine power is derated. The code is logged.
These codes are usually caused by excessive fuel or oil in the DPF.
Table 3
Associated Diagnostic Trouble Codes
3480-15
or E1050 (1)
3480-16
or E1050 (2)
4077-15
or 1051 (1)
4077-16
or 1051 (2)
Table 4
Troubleshooting Test Steps Values Results
1. Check for Associated Diagnostic Trouble Codes
A. Establish communication between the Cat® Electronic Technician (ET) and the ECM. Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
Troubleshoot any associated diagnostic codes listed in Table 3 that are present before continuing with this procedure.
Associated Codes
Result: An associated diagnostic trouble code is not active or logged.
Proceed to Test Step 2.
Result: An associated code is active or logged.
Repair: Troubleshoot the associated codes before continuing with this procedure.
Refer to Troubleshooting, "Diagnostic Trouble Codes" in order to troubleshoot the associated diagnostic code.
2. Check for High Exhaust Temperatures
A. Several factors can cause a calculated high exhaust temperature. Refer to "Troubleshooting, Exhaust Temperature Is High" for further information on calculated high exhaust temperatures.
High Exhaust Temperatures
Result: The engine is experiencing high exhaust temperatures. Repair the cause of the high exhaust temperature.
Result: The engine is not experiencing high exhaust temperatures.
Proceed to Test Step 3.
3. Perform a manual cylinder cutout test.
A. Remove the inlet section (DOC) from the DPF.
B. Use Cat ET to set the value of the "ARD Manual Disable Status" configuration parameter to "Disabled" in order to disable the ARD.
C. Perform a manual cylinder cutout test. Manually cut out each cylinder while the exhaust is monitored. As each cylinder is cut out, look for a decrease in white smoke.
Faulty Injector
Result: A faulty injector is found.
Repair: Replace any injectors that cause the engine to smoke and run rough when the cylinder is not cut out.
Clean the inside of the inlet section of the DPF.
Assemble the DPF. The engine must be run with no load at 1400 rpm for at least 15 minutes. If the white smoke continues after 15 minutes, the engine must continue to run until there is no white smoke.
Set the value of the "ARD Manual Disable Status" configuration parameter to "Not Disabled" in order to enable the ARD. Proceed to Test Step 5.
Result: A faulty injector is not found.
Proceed to Test Step 4.
4. Inspect the DPF
A. Remove the inlet section (DOC) from the DPF.
B. Inspect the inside of the inlet section and the front face of the DPF. Look for oil and for excessive soot.
C. Inspect the inlet to the Diesel Oxidation Catalyst (DOC). Inspect the inlet of the catalyst and check the catalyst for plugging.
A small amount of soot is a normal condition. Contact your local technical communicator for Caterpillar engines if you suspect that the amount of soot is excessive. Continue with this procedure after you have received guidance from the technical communicator.
Oil, Excessive Soot or Plugging
Result: Oil is found.
Repair: Perform the following procedure:
1. Inspect the outlet of the turbocharger. Clean the oil from the inside of the inlet section of the DPF.
2. Assemble the DPF. The engine must be run with no load at 1400 rpm for at least 15 minutes. If the white smoke continues after 15 minutes, the engine must continue to run until there is no white smoke.
Proceed to Test Step 5.
Result: Oil is not found.
Proceed to Test Step 5.
5. Perform a "Manual DPF Regeneration"
This test must be performed through Cat ET. The Cat ET service tool enhances the diagnostics during the service test.
A. Reset all active codes and clear all logged codes.
B. Start a "Manual DPF Regeneration".
Test was Successful
Result: The "Manual Diesel Particulate Filter Regeneration" was successful.
Return the engine to service.
Result: The "Manual Diesel Particulate Filter Regeneration" was not successful.
Repair: Troubleshoot any diagnostic codes that are present, if no codes are present, Proceed to Test Step 6.
6. Replace the ARD Combustion Head
A. Replace the ARD combustion head.
B. Select the ARD Ignition Test tab. The ARD Ignition Test cannot be performed if the DPF soot loading is above 80%. When the DPF soot loading is above 80%, the Manual DPF Regeneration must be performed using Cat ET.
C. Perform an "ARD Ignition test". to verify proper operation of the Regeneration system.
Test was Successful
Result: The ARD Ignition Test was successful.
Return the engine to service.
Test Step 1. Results:
The procedure corrected the issue. - STOP
The procedure did not correct the issue. - Repair: Contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).STOP