Renault Fluence Diesel Particulate Filter DPF (2009-2020)

The Diesel Particulate Filter (DPF) on the Renault Fluence diesel, especially models with 1.5 dCi engines (K9K 834 or L30S/L38), is part of the exhaust system designed to capture and eliminate fine soot particles from diesel combustion. It helps the vehicle meet Euro 4 emission standards by reducing pollutant emissions by up to 85-100% under loaded conditions and prevents visible exhaust smoke.

Exhaust gases pass through a porous wall filter, often made of cordierite, trapping particles above a certain size and creating back pressure. The DPF cleans itself through a process called regeneration:

• Passive Regeneration: At exhaust temperatures above 600°C, an oxidizing catalytic converter burns off accumulated soot.
• Active Regeneration: The system injects extra fuel to raise the exhaust temperature to burn soot when passive regeneration is insufficient. Temperature and pressure sensors monitor this process.

The DPF is usually located after the turbocharger and includes an integrated catalytic converter.

Key features include:

• Applicable to models with 90 HP meeting Euro 4 standards
• Flexible pipe connection, diameter 50 mm
• Recommended replacement every 120,000 to 160,000 km to avoid failures
• Material: Cordierite ceramic
• Maximum ash load before forced regeneration: 60 g
• Manual regeneration possible by driving at 60-80 km/h for 25-30 minutes or using diagnostic tools like VCDS

Replacement parts are available with OEM specifications for proper fit and performance.

Signs of DPF issues include:

• Increased fuel consumption
• Loss of engine power
• Illumination of the Check Engine light on the dashboard
• Common problems with the differential pressure sensor and damaged or detached pipes that hinder regeneration

Failing components can cause the DPF to clog as soot accumulates without proper cleaning.

Diagnosis often focuses on the differential pressure sensor located under the engine cover, where pipes may be cracked or blackened and disconnected. Effective repair involves:

• Inspecting and replacing the pressure sensor if faulty
• Checking and repairing or replacing hoses to restore regeneration flow
• Following detailed video tutorials and illustrated manuals for step-by-step replacement guidance

Using OEM or high-quality parts helps ensure reliable repairs and sustained cleaner exhaust emissions.

The DPF is installed in the exhaust system after the turbocharger and includes the catalytic converter (oxydiesel type). It is positioned between the front and center sections of the exhaust pipe with a typical diameter of 50 mm.

• Placement ensures effective filtration of soot particles before gases exit the exhaust

Proper location helps optimize emission control and ensures the regeneration system functions correctly.

The recommended replacement interval for the DPF is between 120,000 and 160,000 kilometers to prevent clogging and system failure. This is especially important for vehicles adhering to Euro 4 emission standards with cordierite material filters.

• Replacing on schedule maintains optimal fuel economy and engine power
• Routine maintenance and proper driving conditions support longer DPF lifespan

Ignoring recommended intervals may result in increased repair costs and emission problems.

Yes, manual regeneration is possible by driving the vehicle at sustained speeds of 60 to 80 km/h for about 25 to 30 minutes. This raises the exhaust temperature to trigger passive regeneration, burning off accumulated soot in the filter.

• Alternatively, diagnostic tools like VCDS can force regeneration electronically
• Ensure the engine reaches operating temperature and avoid short trips to help maintain regeneration cycles

These methods help maintain DPF efficiency and prevent costly blockages.

For any complex issues, professional diagnosis is recommended.

High-quality Diesel Particulate Filters and related components for Renault Fluence are available from specialized suppliers offering original equipment manufacturer (OEM) compliant parts. These include:

• Brand-new stainless steel DPFs with certified performance
• Replacement sensors and pressure hoses
• Parts with a 3-year warranty and compliance with European emission standards
• Technical support, installation guides, and customer service for optimal fit and function

Choosing genuine, certified parts ensures reliability, optimal emission control, and vehicle compliance with environmental laws.