Suzuki SX4 Diesel Particulate Filter DPF (2006-2014)

The Diesel Particulate Filter (DPF) on the Suzuki SX4 diesel models, such as 1.9 DDiS and 2.0 DDiS, is designed to capture fine particulate matter from exhaust gases to comply with Euro 4, 5, or 6 emission standards. It is made of materials like silicon carbide or cordierite and requires periodic regeneration to prevent clogging and maintain optimal performance.

The Suzuki SX4 1.9 DDiS (120 hp) comes with a standard DPF in the diesel engine. The 2.0 DDiS (EY RW420D, 135 hp) specific to model years 2009/08 to 2014/09 features a DPF designed for those Euro emission standards. Key components include differential pressure sensors and temperature sensors. Replacement is recommended between 80,000 and 140,000 km if heavily clogged.

Symptoms of a faulty DPF include:

• Increased fuel consumption
• Loss of engine power or sudden engine stall
• Illumination of the Check Engine or DPF warning light
• Reduced engine performance due to high exhaust backpressure detected by sensors

In such conditions, the engine may enter a limp mode to protect itself.

The DPF traps carbon particles from diesel exhaust and periodically performs regeneration to burn off these particulates. Regeneration can be:

• Passive regeneration: Occurs automatically when the exhaust temperature reaches around 600°C during normal driving.
• Active regeneration: Triggered by the engine control module using fuel additives to lower the combustion temperature by about 100°C, or by driving at high RPM for 10 minutes.

Using fuel additives with cerium helps in this regeneration process. Regular checks and diagnostics through the engine control module (ECM) are advised to monitor DPF condition and sensor activity.

Common issues include:

• Frequent clogging in urban driving with many short trips
• Sensor and additive system malfunctions
• Possible need for forced regeneration or replacement if cleaning fails

It is recommended to regularly perform highways or longer drives to facilitate passive regeneration, and to follow service intervals for additive refill and diagnostics. Replacement intervals vary but typically span between 40,000 to 80,000 km for initial maintenance and up to 140,000 km if needed.

DPF components for Suzuki SX4 diesel vehicles are priced typically from €14.49 to €1,369.76 for aftermarket parts depending on supplier and specifications. The filters are made from materials like silicon carbide and cordierite to ensure durability and efficiency while complying with emission standards.

Krosfou offers new, high-performance DPFs made in Europe with advanced technology, stainless steel construction, and come with a 3-year warranty for use up to 100,000 km.

Removing or bypassing the DPF is not recommended as it will cause increased pollution, violate emission regulations, and possibly void your vehicle warranty. The car's ECU is configured to monitor the DPF via sensors and will trigger fault codes if removed. Proper maintenance or replacement of the filter is advised instead of removal.

The DPF warning light indicates a problem with the DPF system, such as clogging or sensor issues. When this light appears:

• Check if the engine is in limp mode (reduced power)
• Drive the car at 3,500 rpm for about 10 minutes to allow active regeneration, preferably on a highway
• If the light persists, have your vehicle diagnosed with an OBD tool that reads DPF-related codes
• Regularly refill the regeneration additive if applicable

If diagnostics reveal severe clogging or sensor failure, professional service or DPF replacement may be required.