Powertrain
generic / SAE
P2459
Diesel Particulate Filter Regeneration Frequency
Active DPF regenerations are being requested more often than the calibration window allows. Indicates that soot accumulates faster than the filter can burn it off — typically due to short-trip use, leaking injectors, or excessive engine oil consumption.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 59
Possible causes
- Predominantly short-trip operation high
- Leaking injector raises soot output medium
- High engine oil consumption (turbo seals, valve stems) medium
Symptoms
- Check engine light or DPF warning light on
- Power loss / limp mode
- Increased fuel consumption
- Failed forced regeneration attempts
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–1500 €
- Estimated time: 1–6 h
- Component: diesel particulate filter
- Component: fuel injector
- Component: turbocharger
- MIL / check engine light
- emissions-relevant
- drive cycle required
Sources
References
sae:J2012