DPF status: ash, soot and regeneration history
On diesel cars whose engine computer reports it, 2dakika reads the diesel particulate filter's (DPF) ash and soot levels, regeneration history and filter replacement, and sums them up plainly. It doesn't perform any operation on the DPF.
Ash and soot
Two things build up in a particulate filter. Soot is burned off during regeneration. Ash doesn't burn off and accumulates over time; a filter past its ash limit may need cleaning or replacement.
Regeneration
When the soot in the filter reaches a certain level, the engine computer burns it off in a regeneration. If the engine computer reports it, the report shows how far and how long ago the last regeneration ran, how long it lasted, regenerations that didn't complete and the filter replacement.
How it appears in the report
- Looks normal
- The values read are below the limits the engine computer reports.
- Keep an eye on it
- A value is approaching its limit; for example, soot has reached the regeneration threshold.
- Check recommended
- A value is past its limit, some regenerations didn't complete, the filter is due for replacement or there's a DPF fault record. The report suggests having it checked by a mechanic.
- Values read
- The engine computer reports values but no limit to compare them with; the values are only shown.
The values are the engine computer's own figures, as of the scan.
Which cars show it?
Only diesel cars, and only if the engine computer reports these values. On a petrol car, or when the values can't be read, the report has no DPF section.
2dakika doesn't operate on the DPF
2dakika only reads and interprets the DPF values; it doesn't clean the filter, run a regeneration or perform any other operation.
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