Diesel Particulate Filter Efficiency Below Threshold (Bank 1)
Emission · DPF System
The diesel particulate filter (DPF) is below the minimum efficiency threshold. Soot has built up and active regeneration is required. Short-trip city driving prevents self-cleaning. Ignoring leads to a completely blocked DPF requiring expensive forced regeneration.
- DPF clogged from short-trip city drivingMost common
- Failed DPF temperature sensorCommon
- EGR system fault causing excessive sootCommon
- Low-quality diesel fuelLess common
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Frequently asked questions
What does P2002 mean?
The diesel particulate filter (DPF) is below the minimum efficiency threshold. Soot has built up and active regeneration is required. Short-trip city driving prevents self-cleaning. Ignoring leads to a completely blocked DPF requiring expensive forced regeneration.
Is P2002 serious?
Fix soon — DPF is clogged and needs regeneration.
How much does it cost to fix P2002?
Repair costs for P2002 range from $300 – $700 depending on the root cause and your vehicle.
Can I drive with P2002?
You can drive short distances but should have it repaired within 1-2 weeks to prevent further damage.