Diesel Particulate Filter Has High Ash Load
The Electronic Control Module (ECM) calculates the amount of ash that is in the Diesel Particulate Filter (DPF). The ECM activates the following code when the conditions are met.
Show/hide table
| Diagnostic Trouble Codes For High Ash Load | ||
|---|---|---|
| J1939 Code | Code Description | Comments |
| 3720-15 | Particulate Trap #1 Ash Load Percent : High - least severe | The ECM has determined that an ash service is required. The calculation is based on the size of the DPF and the operating hours for the engine. Once the ash service has been completed, the electronic service tool can be used in order to reset the parameter in the ECM. |
| 3720-16 | Particulate Trap #1 Ash Load Percent : High - moderate severity | The ECM has determined that an ash service is required. The calculation is based on the size of the DPF, the operating hours for the engine and the duty cycle for the engine. Once the ash service has been completed, the electronic service tool can be used in order to reset the parameter in the ECM. |
| Follow the troubleshooting procedure in order to identify the root cause of the fault. | ||
Note: Download the following items before performing any troubleshooting or clearing any diagnostic codes:
- Warranty Report
- Aftertreatment Regeneration Trigger History
- Product Status Report with Histograms
When a 3720-15 code or a 3720-16 code are active, the DPF requires an ash service. For further information, consult a Caterpillar dealer.
Caterpillar Information System:
797F and 797F XQ Off-Highway Trucks Fuel System Primary Filter (Water Separator) - Replace
797F and 797F XQ Off-Highway Trucks Fuel System Primary Filter (Water Separator) - Drain
797F and 797F XQ Off-Highway Trucks Hoist Screens - Clean
797F and 797F XQ Off-Highway Truck Power Train Electrical System
C32 Marine Engine Overhaul (Top End) - Engines Which are Rated "E"
3412C Generator Sets Declaration of Conformity
3412C Generator Sets Sound Information
Visual Inspection and Salvage Procedures for Aftercoolers in 3500 Engines {1063, 1063, 1379} Visual Inspection and Salvage Procedures for Aftercoolers in 3500 Engines {1063, 1063, 1379}
797F and 797F XQ Off-Highway Trucks Frame - Clean/Inspect
349F and 352F Excavators Machine System Specifications Grease Lines
345D, 349D and 349D2 Excavator Machine System Specifications Counterweight Lines
G3304B and G3306B Engines Flywheel - Inspect
C7.1 Industrial Engine and Generator Set ARD Fuel Supply - Test
3500 Engines Air Lines
793F Off-Highway Truck Machine Systems Pump Drive - Disassemble
793F Off-Highway Truck Machine Systems Pump Drive - Assemble
Instructions For Installing The Window On Some Generator Set Enclosures{7274, 7310} Instructions For Installing The Window On Some Generator Set Enclosures{7274, 7310}
Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095} Filtration Times for Caterpillar Machine Fluid Compartments{0680, 0738, 0768, 3080, 5050, 5056, 5095}
797F and 797F XQ Off-Highway Trucks Hydraulic Tank Screen - Clean
797F and 797F XQ Off-Highway Trucks Magnetic Plug (Wheels) - Check
C7.1 Industrial Engine and Generator Set ARD Loss of Combustion
Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216} Inspection and Reuse Guideline of Cylinder Liners in Cat Engines {0761, 1201, 1213, 1216, 1216}
C13 and C15 On-highway Engines ARD Fuel Pressure Is High
797F and 797F XQ Off-Highway Trucks Pump Drive Return Screen - Clean - Transmission and Torque Converter System