Peugeot 807 Diesel Particulate Filter DPF (2002-2014)

The Diesel Particulate Filter (DPF) on Peugeot 807 Diesel models, especially the 2.0 HDi (136 or 163 HP) and 2.2 HDi (128 HP) engines, is an additive-based system developed by PSA Peugeot Citroën from 2000. It traps 99.9% of diesel engine particles using a ceramic filter made of sintered silicon carbide with a filtration threshold of 0.1 micron. Exhaust gases are forced through porous walls to capture soot particles. An additive (Eolys) stored in a reservoir is injected to reduce the combustion temperature of soot, enabling automatic regeneration.

The key components of the DPF system include:

• DPF filter: Equipped with upstream and downstream pressure sensors to measure differential pressure and detect clogging.
• Engine control unit: Manages the HDi injection, regeneration process, and limits engine speed to 2200 rpm in overload situations.
• Regeneration support system: Includes intake air heater, post-injection (third injection after top dead center), disables gas recirculation, and controls the turbo to maintain torque.
• Additive reservoir: Contains additive fluid with a vent valve; low fluid level triggers a dashboard warning light.

DPF regeneration occurs every 350 to 800 km depending on filter loading to burn trapped soot by raising exhaust gas temperatures to approximately 600°C. Regeneration types include:

• Level 1: Catalytic converter preheating.
• Passive regeneration: Happens during long or fast drives at high natural temperatures.
• Active regeneration: Engine post-injection and intake butterfly inversion to raise temperature, often transparent to the driver if conditions are favorable.

Repeated regeneration failure triggers a limp mode with restricted airflow and gear ratios. Forced regeneration can only be done in a garage using diagnostic tools, involving engine idling then revving to 4000 rpm with post-injection to clean the filter, refill additive, erase faults, and reset the system.

Replacement intervals vary by engine type:

• 2.0 HDi 163 HP: Recommended replacement every 145,000 km.
• 2.0 HDi 136 HP: Recommended every 140,000 km.
• 2.2 HDi 128 HP: Compatible models listed; intervals are similar but not precisely specified.

Regular diagnostic checks with professional tools are advised to monitor DPF and additive system status.

Physically removing or disabling the DPF and related components (such as pressure sensors and electronic deactivation in the ECU and BSI) is illegal on public roads in France under article L.318-3 of the Road Code. This also typically requires removing the Exhaust Gas Recirculation (EGR) valve to avoid fault warnings. Removal is not recommended and should only be considered for off-road use or special applications in compliance with local laws.

Common causes include:

• Inadequate driving conditions preventing proper regeneration (e.g., frequent short trips where engine does not reach operating temperature).
• Low additive fluid levels or additive system faults.
• DPF clogging due to excessive soot accumulation or damage.
• Sensor malfunction or pressure measurement faults.

A diagnostic check and, if necessary, a forced regeneration or replacement by a qualified garage is recommended to resolve issues.

High-quality original DPF units fitting Peugeot 807 Diesel engines are available from specialized dealers offering products manufactured according to strict European standards. These DPFs are made with stainless steel housings and advanced ceramic monoliths treated with rare metals for durability and high performance. Always ensure compatibility with your vehicle model (engine size and Euro standard) and consider professional installation.

Check dealer catalogs or professional automotive suppliers for purchase options including price, warranty, and shipping details.

To maximize the lifespan and ensure optimal performance of your Peugeot 807 Diesel particulate filter:

• Follow recommended driving patterns to allow regular DPF regeneration—favor longer, faster journeys occasionally.
• Keep the additive reservoir filled and check for warning lights indicating low additive levels.
• Use diagnostic services to monitor DPF condition and regeneration cycles.
• Avoid short trips that prevent the engine and exhaust system from reaching necessary temperatures.
• Maintain regular engine and oil servicing and follow manufacturer's maintenance schedule.

Professional forced regeneration may be necessary if automatic regeneration fails. Repairs and replacements should always be performed by qualified technicians using original or certified high-quality parts.