P2002

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Diesel Particulate Filter Efficiency Below Threshold

What this code means

The DPF is not trapping soot as it should - it may be damaged, removed, or overloaded.

Common symptoms

Check engine light
Reduced power, possible limp mode
Frequent regeneration attempts

Most common causes

Clogged or cracked DPF
Failed differential pressure sensor
Frequent short trips preventing regeneration
Upstream engine problems producing excess soot

Can you keep driving?

A motorway drive may allow regeneration; if the light persists, have the DPF pressure readings checked before it clogs solid.

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Find a repair shop

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Descriptions are for guidance only. Accurate diagnosis requires a workshop inspection.