C9.3 Tier 4 Final Engines Diesel Particulate Filter Collects Excessive Soot Caterpillar

Diesel Particulate Filter Collects Excessive Soot

C9.3 Tier 4 Final Engines [UENR0978]

C9.3 Tier 4 Final Engines Diesel Particulate Filter Has High Ash Load

AIR INLET AND EXHAUST SYSTEM

AFTERTREATMENT GP

C9.3 Tier 4 Final Engines Diesel Particulate Filter Collects Excessive Soot

C9.3 Tier 4 Final Engines Diesel Particulate Filter Has High Ash Load

C9.3 Tier 4 Final Engines Diesel Particulate Filter Has Changed Regeneration Interval

C13, C15, and C18 Tier 4 Final Engines DEF Module Does Not Respond

C13, C15, and C18 Tier 4 Final Engines DEF Tank Temperature Is High

C13, C15, and C18 Tier 4 Final Engines DEF Tank Level Is Low

C13, C15, and C18 Tier 4 Final Engines DEF Pressure Is Low

Use this procedure in order to troubleshoot excessive soot in the Diesel Particulate Filter (DPF). Also use this procedure if one of the following event codes are active. Refer to Troubleshooting, "Event Codes" for information about event codes. For information on the engine monitoring system, refer to Troubleshooting, "Engine Monitoring System".

Note: Certain systems will display multiple codes for troubleshooting. These "Associated Codes" must be used in order to troubleshoot the system effectively. Refer to Troubleshooting, "General Information" for additional information.

Note: Refer to Troubleshooting, "Cat ET Service Features" for information about service features.

The Engine Control Module (ECM) maintains an estimate of the soot load in the Diesel Particulate Filter (DPF). The estimate is based on the engine operating conditions. If the ECM estimates that the soot load is excessive, the ECM activates the applicable code.

Note: After the regeneration is complete and soot loading is reduced to 0%, the active soot loading code will not become logged or cleared for 5 minutes.

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Table 1
J1939 Codes and Description	CDL Code and Description	Comments
3719-16 High DPF #1 Soot Loading	E995 (2) High DPF #1 Soot Loading	The estimated soot load is high. The ECM shuts down the engine when this code becomes active for the first time. The engine can be started and operated. Engine power is gradually derated or maximum rpm will be lowered as the soot load increases.
3719-0 High DPF #1 Soot Loading	E995 (3) High DPF #1 Soot Loading	The estimated soot load is high. Engine operation is limited to 60 second intervals when the AVSpare Electronic Technician (ET) is not communicating with the ECM.
3715-31 DPF Active Regeneration Inhibited Due to Permanent System Lockout	E991 (3) DPF Active Regeneration Inhibited Due to Permanent System Lockout	The estimated soot load is high. The engine may not operate properly. Factory passwords are required in order to clear this code.
3714-31 DPF Active Regeneration Inhibited Due to Temporary System Lockout	E992 (3) DPF Active Regeneration Inhibited Due to Temporary System Lockout	The engine has been running for10 minutes after the E995 (3) code was activated. The Cat ET Manual Diesel Particulate Filter Regeneration must be initiated.

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Table 2
Associated Diagnostic Trouble Codes
E1045 (2)
E1026 (2)
E1025 (2)
E993 (2)
E1156 (1)
E593 (2)
E1239 (1)
E1026 (1)
E1300 (2)
102-18
3473-31
3474-14
3474-31
3609-15
3703-31
3711-31
3750-31
3716-31

Note: Engine operation must be kept to a minimum in order to minimize the amount of soot that is created. Follow the troubleshooting procedure in order to minimize the amount of engine operation.

Troubleshooting Procedure

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Table 3
Troubleshooting Test Steps	Values	Results
1. Check for Codes A. Establish communication between Cat^® Electronic Technician (ET) and the Electronic Control Module (ECM). B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes. C. Look for the following codes: 1. E995 (2) or 3719-16 2. E995 (3) or 3719-0 3. E991 (3) or 3715-31 4. E992 (3) or 3714-31	Codes	Result: A E991 (3) or 3715-31 code is present. Proceed to Test Step 2. Result: One of the following codes are present: 1. E995 (2) or 3719-16 2. E995 (3) or 3719-0 3. E992 (3) or 3714-31 Proceed to Test Step 3.
2. E991 (3) or 3715-31 code A. The E991 (3) or 3715-31 code indicates that the engine has continued to run after repeated warnings and engine shutdowns. The DPF must be replaced. Refer to the Disassembly and Assembly, "Diesel Particulate Filter - Remove and Install (Clean Emissions Module)" for the correct procedure.	DPF	Result: A E991 (3) or 3715-31 code is present. Repair: Replace the DPF. Refer to the Disassembly and Assembly, "Diesel Particulate Filter - Remove and Install (Clean Emissions Module)" for the correct procedure. After the DPF has been replaced, clear the E991 (3) or 3715-31 code ( a factory password will be necessary) and proceed to Test Step 3
3. Check for Associated Codes A. Establish communication between Cat ET and the Electronic Control Module (ECM). B. Check Cat ET for any associated codes that are listed in Table 2.	Associated Codes	Result: An associated code is active or logged. Repair: Troubleshoot any codes that are present before continuing with this procedure. Result: An associated code is not active or logged. Proceed to Test Step 4.
4. Current Flow through the Heating Element A. Start the engine. B. Check the current flow through the heating element. Refer to Systems Operation/Testing and Adjusting, "ARD Nozzle Heater (Current) - Test" for the correct procedure.	Current Flow	Result: The current flow is acceptable. Proceed to Test Step 5. Result: The current flow is not acceptable. Repair: Refer to Troubleshooting, "ARD Nozzle - Test" for the correct procedure.
5. ARD Combustion Air Test A. Perform the "ARD Air System Service".	Combustion Air Test	Result: The test results are unacceptable. Repair: Refer to Troubleshooting, "ARD Combustion Air - Test" for information on the test, if necessary. Make the necessary repairs. Result: The test results are acceptable. Proceed to Test Step 6.
6. Manual DPF Regeneration Do not use the cab switch for a stationary regeneration. The service tests provide enhanced diagnostics that are necessary for proper troubleshooting and repair. A. Start a "Manual DPF Regeneration" in Cat ET.	Manual DPF Regeneration	Result: The "Manual DPF Regeneration" was successful. Return the engine to service. Result: The "Manual DPF Regeneration" not was successful. Repair: Troubleshoot the diagnostic codes that are present.