[amidgeha]

Diesel Particulate Filter Regeneration Frequency

The particulates in the exhaust gases are collected by the Diesel Particulate Filter (DPF). When the filter becomes saturated with particulates, they are incinerated by a regeneration process. The regeneration process increases the exhaust gas temperature, warning the Diesel Oxidation Catalyst (DOC) first, the warning the DPF. The Engine Control Module (ECM) monitors the system with inputs from two Exhaust Gas Temperature (EGT) sensors 1 and 2 and the exhaust differential pressure sensor.

Cause:
Exhaust leak
Improperly installed or loose Exhaust Gas Temperature (EGT)
Low engine compression
Corroed fuel injector
Water in the fuel system

Symptoms:
Check engine light