P2003Diesel Particulate Filter Efficiency Below Threshold (Bank 2)
The differential pressure sensor or temperature monitor across the diesel particulate filter (DPF) reports that filtration efficiency has dropped below the legal threshold. Common after a damaged filter substrate, blocked passages from failed regenerations, or a leak around the housing.
Can I keep driving? NO
STOP the vehicle in a safe place. Continuing to drive may cause serious engine damage or put your safety at risk.
Sistema Afectado
Motor · Powertrain
La falla pertenece al grupo motopropulsor (motor y gestión electrónica).
Espacio para vendedores de repuestos
Aún no hay un anunciante en este espacio.
Symptoms You Will Notice
What you may observe when this code appears
- Check engine light or DPF warning light on Power loss / limp mode Increased fuel consumption Failed forced regeneration attempts
Possible Causes
The components or conditions that trigger this code
- 1DPF heavily loaded — repeated short trips prevent regeneration Filter substrate cracked or melted
How to Fix It — Step by Step
Recommended diagnostic and repair procedure
- 1Difficulty: hard. Estimated time: 2-8 hours. Estimated cost: €400-€
- 2Professional repair recommended
Note: This information is for general reference. For precise diagnostics and safety repairs, always consult a certified mechanic.
Estimated Cost
Approximate range in USD (varies by region and shop)
Varies by diagnosis
* Diagnosis only: $50–$150
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