Infiniti QX70 Diesel Particulate Filter DPF (2013-2018)

The Diesel Particulate Filter (DPF) in the Infiniti QX70 3.0d V6 AWD engine is an emission control device designed to capture and store soot particles from the exhaust gases to reduce pollution. This filter traps harmful particulates before they exit the exhaust system, ensuring compliance with Euro emission standards and helping protect the environment.

Signs indicating a clogged or defective DPF include :

• Increased fuel consumption.
• Loss of engine power and performance.
• Illumination of the DPF warning light (an orange exhaust symbol).

These symptoms commonly occur when the filter saturates due to ineffective regeneration, especially with frequent short urban trips.

The Infiniti QX70 uses an automatic regeneration system that burns off soot collected in the DPF at high temperatures (about 600°C). This is triggered typically during higher-speed motorway driving to restore filter efficiency. A differential pressure sensor measures pressure before and after the filter to detect clogging and initiate regeneration.

If the DPF warning light illuminates, it usually means the filter is saturated due to failed regeneration. Recommended actions include :

• Performing a manual regeneration by driving at 60-80 km/h for 25-30 minutes in 3rd or 4th gear to force soot combustion.
• Using specific carbon cleaning services without dismantling the DPF to prolong its life.
• Consulting a garage for a diagnostic check if the issue persists.

Avoid ignoring this warning to prevent engine damage or costly replacement.

Yes, there are maintenance options to extend the life of your vehicle's DPF :

• Manual regeneration by appropriate driving cycles.
• Carbon cleaning treatments (dry cleaning) that clean the DPF without removal.
• Use of maintenance additives designed for diesel particulate filters.

These options help reduce the need for costly OEM DPF replacement, which can range from £1000 to £2000.

The DPF is integrated into the vehicle's exhaust system, typically positioned after the engine's catalytic converter and before the muffler. It is a key component located underneath the vehicle, directly connected to the exhaust piping, and equipped with sensors to monitor pressure and temperature for efficient operation.

• This placement allows it to effectively trap particulate matter produced by the diesel engine's combustion process.
• The exact location can vary slightly depending on the model year and transmission type (AWD).

The OEM reference for the Infiniti QX70 3.0d diesel particulate filter is 1191235. There are various high-quality options available on the market manufactured with stainless steel and advanced monolith technology offering durability and performance equivalent or superior to original parts.

• Parts are typically offered with a 3-year warranty with use limits of up to 100,000 km.
• These include brand-new DPFs, not refurbished, compliant with emission regulations and manufacturer specifications.
• Many manufacturers provide fast shipping options and professional technical support to ensure correct fitment and performance.

Choosing OEM or certified equivalent parts helps maintain engine power, fuel efficiency, and compliance with emission standards.

To ensure effective maintenance or replacement of the Infiniti QX70 DPF :

• Check with professional garages familiar with Infiniti diesel vehicles and AWD systems.
• Use recommended diagnostic tools to read error codes and assess DPF condition.
• Consider professional carbon cleaning services and confirm compatibility of parts via VIN or engine code.
• Register for manufacturer or specialist support to benefit from technical advice and aftermarket warranty options.

Proper maintenance and timely intervention prolong the life of your vehicle’s emission control system, reduce emissions, and keep your engine running efficiently.