Nissan Interstar Diesel Particulate Filter DPF (2002-2010)

The Diesel Particulate Filter (DPF) on Nissan Interstar diesel vehicles (such as the 2.5 dCi 120 hp models, X70 or X62B chassis) is a key emission control device. It captures fine soot particles from exhaust gases to comply with European environmental standards through filtration and regeneration processes. Positioned in the exhaust system after the turbocharger, it works together with pressure and temperature sensors and sometimes an integrated catalytic converter, all monitored by the engine control unit.

Exhaust gases pass through a porous surface of the DPF that traps soot particles above a certain threshold. This buildup creates back pressure that triggers the regeneration phase. The regeneration can be passive — occurring at high exhaust temperatures where the catalytic converter burns the soot — or active, where extra fuel is injected to raise the temperature to around 600°C to burn off accumulated soot.

The DPF typically has a lifespan between 150,000 to 180,000 km when regular regeneration occurs.

When the DPF is clogged, typical symptoms include:

• Loss of engine power and acceleration
• Visible smoke from the exhaust during acceleration
• Increased diesel fuel consumption
• Illumination of the Check Engine light

A clogged DPF often accumulates around 50 grams of soot, causing automatic and forced regeneration attempts to fail.

DPF clogging is often caused by:

• Driving conditions that prevent the DPF from reaching required regeneration temperature, such as frequent short trips or urban driving
• Low-quality or insufficient fuel injection
• Faulty sensors (pressure or temperature sensors)
• Blocked Exhaust Gas Recirculation (EGR) valve
• Cold engine operation not allowing passive regeneration

To promote self-cleaning, it is recommended to occasionally drive on highways at higher engine RPM to trigger regeneration.

Three common solutions exist for addressing a clogged or faulty DPF:

• New original or aftermarket DPF replacement: Restores full performance but can be costly, often half the vehicle's value.
• Professional cleaning: Dismantling with cleaning by water, compressed air, or chemical methods without ECU modification, preserving legality and restoring functionality economically.
• Dismantling or removal: Illegal and not recommended as it violates European emission regulations and may result in fines.

Associated parts like pressure and temperature sensors and catalytic converters should also be checked during repair.

Professional cleaning is a cost-effective and eco-friendly option that can restore your DPF's efficiency without needing replacement or ECU changes. Methods include dismantling the DPF for cleaning with specialized machines or chemical solutions that remove soot accumulation. This service is especially important before damage becomes irreversible and while the DPF still has potential to be salvaged.

• Keeps the DPF compliant with European environmental standards
• Maintains vehicle power and reduces fuel consumption
• Avoids costly full DPF replacement

Professional cleaning services are available at specialized workshops and are recommended for Nissan Interstar vans showing DPF-related symptoms.

A clogged DPF significantly affects engine performance and driving by:

• Reducing engine power and responsiveness
• Increasing smoke emission and pollution
• Raising fuel consumption due to inefficient combustion
• Potentially triggering engine fault codes and placing engine in limp mode

Such effects degrade vehicle reliability and can cause further damage if the issue is left unresolved. Early diagnosis and intervention are essential to prevent costly repairs.

Krosfou offers brand-new, original-quality Diesel Particulate Filters and associated spare parts for the Nissan Interstar platform and chassis. Our products are manufactured in Europe with top-grade ceramics and stainless steel (INOX 409), certified to meet or exceed European regulatory standards (E24-103R). We provide:

• A 3-year warranty for all DPFs with limited use up to 100,000 km
• Direct factory pricing and fast delivery across Europe
• Comprehensive technical support and installation guidance
• Professional cleaning services and buy-back offers for used parts

Purchase from a trusted European manufacturer ensures reliable performance, compliance with environmental laws, and durability for your Nissan Interstar diesel van.