Powertrain
generic / SAE
P2458
DPF Regeneration Duration
The DPF regeneration cycle takes longer than the calibrated maximum. The ECU sets this code when the soot load is not being burned off within the expected window — common after many short trips or with degraded post-injection.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number4 / 58
Possible causes
- Heavy soot load, short trips high
- Post-injection insufficient 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: 150–1500 €
- Estimated time: 0.5–4 h
- Component: diesel particulate filter
- Component: dpf temperature sensor
- Component: fuel injectors
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012