Symptoms
DPF warning light, loss of power, frequent fan running after switching off.
Likely cause
Short journeys prevent the diesel particulate filter from regenerating.
Suggested fixes
Listed roughly in the order most owners try them.
- 1
Drive at sustained speed
A 20 to 30 minute run at motorway speed allows a passive regeneration.
- Difficulty:
- Easy DIY
- Cost:
- £ (Under about £50 in parts)
- 2
Forced regeneration with diagnostics
A diagnostic tool can trigger a forced regeneration.
- Difficulty:
- Moderate DIY
- Cost:
- £ (Under about £50 in parts)
- 3
Professional DPF cleaning
If regeneration fails, the DPF can be removed and cleaned.
- Difficulty:
- Specialist job
- Cost:
- ££ (About £50 to £300)
This is general guidance gathered from owner experience and workshop practice, not a substitute for a workshop manual or a qualified mechanic. Costs are rough parts-only guides. Brakes, steering and suspension work affects safety, so if in doubt have it checked professionally.
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