Diesel Particulate Filter Has Changed Regeneration Interval
Associated Diagnostic Trouble Codes
Use the following procedure to check for associated diagnostic codes:
Show/hide table
| Associated Diagnostic Codes | ||
| J1939 Code | Description | Associated Diagnostic Procedure |
| 3251-3 | Particulate Trap Differential Pressure : Voltage Above Normal | Engine Pressure Sensor Open or Short Circuit - Test |
| 3251-4 | Particulate Trap Differential Pressure : Voltage Below Normal | Engine Pressure Sensor Open or Short Circuit - Test |
| 3610-3 | Diesel Particulate Filter Outlet Pressure Sensor 1 : Voltage Above Normal | Engine Pressure Sensor Open or Short Circuit - Test |
| 3610-4 | Diesel Particulate Filter Outlet Pressure Sensor 1 : Voltage Below Normal | Engine Pressure Sensor Open or Short Circuit - Test |
If the associated diagnostic trouble code is present, refer to Troubleshooting, “Diagnostic Trouble Codes” in order to troubleshoot the associated diagnostic code.
Diesel Particulate Filter (DPF) Differential Pressure Sensor
Visually inspect the DPF differential pressure sensor for faults.
- Check that the wiring to the DPF differential pressure sensor is not damaged.
Visually inspect the boost hose for faults.
- Check that the boost hose is still firmly attached to both turbocharger outlet and intake manifold inlet.
Caterpillar Information System:
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