Peugeot 301 Diesel Particulate Filter DPF (2012-2019)

The Diesel Particulate Filter (DPF) on the Peugeot 301, specifically on models with the 1.6 HDi 92 hp engine (code 9HF) since 2012, is a high-performance device integrated into the exhaust system that captures soot particles from exhaust gases. It reduces particulate emissions by up to 1000 times compared to conventional diesel engines, helping your vehicle meet strict emission standards.

The DPF is located downstream of the catalytic converters and uses differential pressure sensors to measure soot loading through exhaust backpressure. It requires a special additive (such as Eolys) that lowers the combustion temperature of soot particles to around 450°C, improving the oxidation process.

The regeneration of the DPF to clean trapped soot occurs in three ways:

• Natural: During long highway trips when exhaust gases reach the necessary temperature.
• Assisted: The engine control unit activates post-injections and modifies engine parameters to raise exhaust temperature.
• Forced: Conducted in a workshop with diagnostic tools where the engine runs at specific speeds and post-injections clean the filter, followed by resetting the system.

Over time, the DPF gradually clogs with soot between 350 and 800 km of driving if regeneration is incomplete. This leads to:

• Increased exhaust backpressure causing reduced engine power.
• Visible smoke from the exhaust.
• Illumination of the DPF warning light on the dashboard.
• Activation of limp mode limiting engine speed (typically up to 2200 rpm).

The expected lifespan of a DPF is between 80,000 and 140,000 km before replacement may be necessary if blockage occurs.

Maintenance includes the use of compatible particulate additive refills and DPF cleaning sprays such as Redex DPF Cleaner. Common cleaning methods are:

• Spraying DPF cleaner through the injection probe, letting it act for about 20 minutes while the engine is off, then driving to allow regeneration.
• Manual cleaning by dismantling the DPF, following detailed tutorial procedures available for the 1.6 HDi Peugeot/Citroën engines.
• Checking the catalytic converter's physical integrity with a probe rod which should not penetrate if intact.
• Forced regeneration at a workshop including additive refilling, cleaning or replacement, and system reset via diagnostic tools.

Replacement is recommended when the DPF is permanently clogged and cleaning or regeneration no longer restores proper function, typically after 80,000 to 140,000 km.

• Use high-quality original DPF parts compatible with the 1.6 HDi engine, with OEM reference numbers such as 1731XN, 174076, 8098034218.
• Replacement should be done professionally to ensure fitment and may include new mounting hardware and a homologation certificate.

Always consult a professional workshop for diagnosis and repair to avoid irreversible damage.

When selecting a DPF product, consider the following:

• Choose a product reference matching your Peugeot 301’s engine model and power output (e.g., 1.6 HDi 92 hp, code 9HF).
• Opt for new, original-quality products certified to meet or exceed OEM standards for durability and performance.
• Ensure the product includes all necessary mounting parts and comes with clear installation instructions and homologation documents.

Krosfou offers high-performance stainless steel DPFs made in Europe, with 3-year warranty and compliance with European regulations.

To maximize the life and effectiveness of your DPF:

• Drive regularly at higher engine speeds (e.g., motorway driving) to allow natural regeneration of the filter.
• Monitor the additive level and refill it as required to maintain proper burning of soot.
• Perform regular diagnostic checks to monitor DPF pressure and regeneration status.
• Avoid excessive short trips where the engine does not reach operating temperature, which can prevent regeneration.

Follow manufacturer and workshop instructions to avoid damage and maintain warranty validity.

Helpful resources include:

• Installation and cleaning tutorials specific to the Peugeot 301 1.6 HDi engine, available on video platforms.
• Technical support with detailed installation manuals and expert assistance via email.
• Forums and community groups discussing common DPF issues such as warning lights, smoke, and power loss symptoms.
• Professional workshops for diagnostic, forced regeneration, additive refilling, and replacement services.

Krosfou provides direct factory support, guaranteed quality products, and extensive technical documentation to help you choose and maintain your DPF correctly.