Replacing the D.P.F. catalytic converter requires all the counters of the parameters listed below to be reset in the ECU because:
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- the amount of particulate in the new filter is zero, so if the particulate amount is not reset, filter regeneration will start even when it is not needed;
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- the amount of accumulated ash is zero, so if the ash counter is not reset, regenerations will be more frequent than necessary, resulting in increased fuel consumption, thermal stress on the particulate filter and, in extreme cases, an unnecessary engine oil change request;
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- the amount of post-injected fuel: if the post-injected fuel counter is not reset, an early engine oil change request may occur.
If both the DPF catalytic converter and the engine oil are replaced, the post-injected fuel counter must be reset.
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- the regeneration status: not required, in progress, interrupted, resumed;
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- the distances and times of the last complete regeneration;
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- the self-correction of the differential pressure sensor (delta-p) drift;
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- the oxidation catalytic converter drift, so that, if the catalytic converter ageing function is not reset, unnecessary post-injection quantities could occur.
