Peugeot 301 Diesel Particulate Filter DPF (2012-2019)

The Diesel Particulate Filter (DPF) on the Peugeot 301 is an essential emissions control device installed on diesel vehicles since 2011. Positioned after the catalytic converter and before the silencer in the exhaust system, it captures up to 99% of fine soot particles from diesel combustion, which are harmful pollutants. The DPF consists of a ceramic body with about 50 microscopic channels per cm² that trap soot while allowing gases to pass through. Over time, the soot layer increases filtration efficiency but also causes backpressure, potentially reducing engine power if not properly managed.

The Peugeot 301's DPF regenerates using two main processes:

• Passive regeneration: Occurs naturally at high exhaust temperatures (above 550°C) during full engine load, burning soot into CO2, water, and ashes every 500-700 km over 5-15 minutes.
• Active regeneration: Initiated by the vehicle's computer if backpressure is detected from soot buildup. It raises exhaust temperature using post-injection, EGR valve control, and turbo function. Some models use additives to lower combustion temperature by about 100°C.

Manual regeneration is also possible using a diagnostic tool, especially for short trips where natural regeneration is insufficient.

DPF clogging is a common issue, especially with frequent short urban trips which prevent proper regeneration. Symptoms include:

• Loss of engine power and poor acceleration
• Engine stalling on start or at idle
• Engagement of limp or degraded mode to protect engine
• Increased fuel consumption
• Unusual chemical smells from exhaust
• Warning lights on dashboard ("Risk of DPF blockage")

If untreated, DPF clogging can cause expensive engine damage. Repairs to the DPF can cost between £1000 and £3000, with full replacement being more expensive.

To mitigate DPF issues, consider the following immediate actions:

• If you notice power loss, drive for 15-20 minutes at around 3000 rpm on a motorway to encourage passive regeneration.
• For engine stalls or rough idling, have the vehicle checked by a professional garage.
• Use active regeneration through diagnostic tools if available, especially for mainly city-driving vehicles.
• If the DPF warning light is on, perform an OBD diagnostic to identify the exact problem.
• Seek professional cleaning services if you experience unusual exhaust smells or persistent faults.

Regular maintenance and monitoring help prevent severe damage and costly repairs.

Preventative measures for DPF longevity include:

• Drive at least one motorway or fast road trip per week, lasting 15-20 minutes at around 3000 rpm to enable effective DPF regeneration.
• Avoid frequent short trips under 10 km that don’t allow the DPF to reach regeneration temperature.
• Regularly monitor the vehicle for warning lights or performance drops.

Following these practices significantly extends the life of the DPF, which typically lasts between 100,000 and 200,000 km if well maintained.

Some tutorials are available online showing how to dismantle and chemically clean the DPF and catalytic converter of a Peugeot 301, often with relatively low product costs (around £30-40). While these DIY cleanings can produce noticeable results, they come with risks:

• Improper handling can damage the DPF or related exhaust components.
• Vehicle warranty may be voided by such interventions.
• Effectiveness varies depending on the clogging extent.

Professional cleaning or regeneration using diagnostic tools is generally recommended for assured results and vehicle safety.

The DPF requires replacement when clogged with irreversible ash deposits, usually after 100,000 to 200,000 km depending on usage and maintenance. Replacement DPFs for Peugeot 301 diesel engines like the 1.5 TD HDI 102 cv (DV5RCF/DV5RD) or 1.6 HDI 90 cv are available from specialist aftermarket suppliers. These brand-new, high-quality parts comply with manufacturer specifications and European standards.

• Confirm part reference compatibility with your exact Peugeot 301 model and engine code.
• Professional installation ensures optimal performance and avoids warranty issues.

Attempting to bypass or remove the DPF is illegal and can lead to vehicle inspection failure and higher pollutant emissions.

Additional sources and resources include:

• Technical websites detailing DPF and catalytic converter functions and AdBlue usage.
• Professional garages equipped with diagnostic tools like Lexia/Diagbox for Peugeot vehicles to perform forced regeneration and accurate diagnostics.
• Online video tutorials explaining maintenance and cleaning procedures.
• Peugeot official manuals and technical support channels.
• Online forums and owner communities for real user experiences and advice.

For any service or replacement needs, always consult a qualified professional to ensure compliance with current norms and regulations.