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DPF (Diesel Particulate Filter) warning light illuminated. Filter is becoming blocked with soot. Requires regeneration to clear. This fault code is stored when the engine control unit detects a specific fault condition. Common causes include sensor failures, wiring faults, and component wear. Always read additional fault codes before replacing parts — multiple codes together provide a clearer diagnosis. Clear the code after repair and test drive to confirm the fault does not return.
Based on 0 driver confirmations
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
Second DPF block in a year. Instead of just getting it cleaned again I changed how I use the car. Added a 20 minute motorway run every Sunday regardless. Changed from 5W30 to the correct low-SAPS 5W30 C2 oil. Been 14 months without a DPF warning. The oil grade really matters on these.
Parts replaced: Correct low-SAPS engine oil
DPF light plus another warning. Turned out the DPF additive fluid (Eolys/FAP fluid) was low — this is needed for regeneration on some French cars. Topped up, drove on motorway, regenerated. Only applies to certain makes with additive systems.
Parts replaced: DPF additive fluid
DPF light on after too many short journeys. Tried a 30-minute motorway run at 2500rpm but light didn't go off. Took it to an independent with the right software and they did a forced regeneration — about 45 minutes on the ramp with the engine running at elevated rpm. Light off, no issues since.
Parts replaced: None — service procedure
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