How can I manually reset the soot level?

ANSWER:

The DPF soot level is based on several different inputs and this data is calculated by the ECM.   When the DPF filter is replaced or reinstalled after having been cleaned the soot ratio value must be reset.  This reset is needed to indicate to the ECM that the filter has been serviced.  Note that the soot level should never be reset unless the filter has been serviced or replaced.  Resetting the soot level, without servicing the filter may result in the regeneration cycle being disrupted and can lead to the filter becoming prematurely overloaded and or damaged.

The reset function is found in the “Exhaust Aftertreatment Diagnostics” test.

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