Nissan Note Diesel Particulate Filter DPF

A Diesel Particulate Filter (DPF) is a pollution-control device installed in the exhaust system of a Nissan Note diesel vehicle. Positioned after the catalytic converter and before the silencer, the DPF captures fine soot particles and ash generated by diesel combustion, which are harmful to human health and the environment. It typically traps up to 99% of these particulate emissions.

The DPF filter in the Nissan Note consists of a ceramic honeycomb structure with thousands of microscopic channels made from cordierite or silicon carbide. Some channels are blocked at their entry, others at their exit, forcing exhaust gases to pass through porous walls, where soot particles are trapped. This system effectively reduces particulate emissions from diesel engines.

DPF regeneration is the process of cleaning the filter to burn off accumulated soot. There are two types of regeneration:

• Passive regeneration occurs automatically when the exhaust temperature is high enough during regular driving.
• Active regeneration is triggered by the engine control unit when soot levels increase, involving post-injection of fuel, EGR valve activation, and turbo control to raise exhaust temperature and burn soot into carbon dioxide, water vapor, and ash.

DPF regeneration typically happens every 500 to 700 miles and lasts between 5 and 15 minutes depending on driving conditions.

A clogged DPF can cause increased back pressure in the exhaust, leading to loss of engine power, poor fuel economy, and potential engine damage. Regular driving at suitable speeds and distances allows the DPF to regenerate properly, preventing clogging. In cases where regeneration cannot occur naturally, a manual regeneration can be initiated using diagnostic tools.

Replacing a DPF in a Nissan Note can cost approximately £559, including VAT. Labour time depends on the specific engine model; for example, about 2 hours for certain variants. High-quality replacement DPFs like those offered by Krosfou come with a 3-year warranty and meet or exceed OE specifications, ensuring reliability and compliance with emission regulations.

To maximise the lifespan of your Nissan Note diesel particulate filter:

• Drive regularly at moderate speeds to allow the DPF to regenerate effectively.
• Avoid frequent short urban trips that prevent proper regeneration and lead to soot build-up.
• Use the correct specification diesel fuel and maintain your vehicle according to manufacturer recommendations.

If the DPF warning light appears or performance drops, consult a professional or consider manual regeneration with diagnostic tools.

Common DPF issues in Nissan Note diesel cars include:

• DPF clogging due to insufficient regeneration often caused by frequent short trips.
• Pressure sensor faults that can falsely trigger DPF warning lights.
• Excessive soot accumulation leading to engine power loss and increased emissions.

Regular maintenance and occasional longer drives help mitigate these issues.

Krosfou offers new, high-performance DPF replacements that meet or exceed original equipment standards. Manufactured with high-quality stainless steel and advanced ceramic monoliths, Krosfou DPFs come with a 3-year warranty and comply with the latest European emission regulations.

• They are direct-from-factory products, not refurbished or reconditioned parts.
• Available for most Nissan Note diesel models including 1.5 dCi engines.
• Technical support and installation guides are provided.

Choosing genuine quality DPF replacements ensures compliance with stringent environmental laws and maintains your vehicle’s performance.

For enquiries or orders, contact Krosfou’s professional network to get expert advice and assistance.