Peugeot 607 Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on Peugeot 607 diesel models (mainly 2.0 HDi 136 hp and 2.2 HDi 133 hp engines) is a ceramic device made of cordierite or silicon carbide. Placed in the exhaust line after the catalytic converter, it filters fine particles down to 0.1 micron to comply with Euro 3/4 emission standards.

DPFs concern mainly Peugeot 607 Berline 9D, 9U versions with these engines:

• 2.0 HDi 136 hp (RHR/DW10BTED4, also RHZ/DW10ATED): DPF length about 505 mm, made from cordierite or silicon carbide, includes mounting hardware and about 400 ml additive capacity.
• 2.2 HDi 133 hp (4HX/DW12TED4): specific DPF up to model year 09/2004.
• 2.0 HDi 107 hp (RHS): available new DPF from 2004/10 onwards.

Positioned after the catalytic converter, the DPF uses differential pressure sensors upstream and downstream to monitor clogging.

The DPF traps soot and particulate matter from exhaust gases. It regenerates by burning off the trapped particles, either passively or actively:

• Passive Regeneration: Happens automatically at high exhaust temperatures (above 600°C), usually on highways, burning soot naturally with hot gases.
• Active Regeneration: Triggered by the engine control unit when clogging is detected (after about 350-800 km). This includes closing the EGR valve, post-fuel injection after TDC, heating intake air, and limiting engine speed to raise exhaust temperature to about 600°C to burn soot.

A special additive system (Eolys) lowers particle combustion temperature and assists regeneration.

Signs of a problematic DPF include:

• Increased diesel fuel consumption.
• Loss of engine power.
• Illumination of the "Check Engine" warning light.
• High differential pressure readings indicating filter clogging, which negatively affects engine performance.

Important maintenance tips include:

• Perform manual regeneration by driving 25–30 minutes at 60–80 km/h to reach the combustion temperature of trapped particles.
• Use diagnostic tools like VCDS for regeneration if needed.
• Avoid short trips that prevent the engine and DPF from reaching sufficient temperature for regeneration.
• Check and refill the special additive level via the engine management system regularly.

The recommended replacement interval for the Peugeot 607 diesel DPF is generally between 145,000 and 185,000 km or when excessive clogging cannot be resolved by cleaning or regeneration.

• Perform a diagnostic to clear faults and attempt forced regeneration.
• Refill or flush the additive reservoir as needed.
• If irreversibly clogged, replace the DPF part following professional workshop guidelines and Peugeot's technical instructions.

Replacement can be a complex and heavy operation requiring expert handling.

The DPFs available from reliable suppliers like Krosfou are 100% new, manufactured in Europe with high-grade ceramics and stainless steel. They come with:

• A 3-year warranty limited to 100,000 km usage.
• Certification by independent authorities ensuring quality equal or superior to original parts.
• Compliance with manufacturer specifications and European emission standards.

This ensures peace of mind on performance, durability, and pollution control.

Additional resources include:

• Online forums such as Planète-Peugeot for community advice on DPF regeneration and troubleshooting.
• Technical repair guides and tutorials available on platforms like YouTube explaining DPF functions and maintenance.
• Professional diagnostic tools and authentic parts supplier websites allow verification of compatibility by VIN and detailed technical support.

Always seek expert help for complex repairs or doubts to ensure correct handling of your Peugeot 607’s DPF system.