Citroen DS3 Diesel Particulate Filter DPF (2009-2016)

The DPF on Citroën DS3 diesel models such as the 1.6 HDi 110 CV (code 9HR) or 1.6 BlueHDi 120 CV (code BHZ/DV6FC) is an essential exhaust system component designed to reduce fine particulate emissions, complying with Euro 5 and Euro 6 standards. It traps soot particles from diesel exhaust gases to minimize pollution.

DPFs are fitted on:

• DS3 3-door with 1.6 BlueHDi 120 CV engine (code BHZ/DV6FC) from 07/2014 meeting Euro 6 emission standards, equipped with an SDPF plus SCR catalytic converter system.
• DS3 with 1.6 HDi 110/112 CV engine (code 9HR) from 2010 onwards, meeting Euro 5/6 standards, featuring a standard DPF.

The DPF traps soot particles from exhaust gases. The engine control unit monitors differential pressure sensors to detect clogging and triggers regeneration:

• Passive Regeneration: Happens automatically during high-temperature highway driving (>500-600°C) lasting 25-30 minutes, burning soot into CO2.
• Active Regeneration: Engine post-injects fuel to raise exhaust temperature to ~600°C, occurring every 350-800 km to burn off soot.
• Assisted and Forced Regeneration: Additional modes to help clean the filter, including forced regeneration in workshops using diagnostic tools.

Irreducible ashes accumulate and require eventual filter replacement.

Common signs include:

• Illuminated DPF warning light or check engine light indicating filter clogging or emission system faults.
• Reduced engine power and activation of limp mode with a maximum of 2200 rpm.
• Increased fuel consumption.
• Hidden failures may occur, particularly with rapid clogging after replacement on the DS3 DV6 engine.

Recommended maintenance intervals:

• First major service at around 150,000 km, then every 25,000 km thereafter.
• Manual regeneration by driving 25-30 minutes at 60-80 km/h or using a diagnostic tool.
• Cleaning without removal may be possible on some 1.6 HDi models by forced regeneration.
• DPF replacement should use high-quality new parts certified to meet standards, with a complete installation kit, including gaskets and sensors.

Professional workshop procedures include additive refills, forced regeneration, error code clearing, and system reset.

Yes, resetting the ECU and resetting the DPF additive counter are distinct processes. Resetting the ECU involves clearing the engine control unit's stored fault codes and adaptation values related to the DPF system, while resetting the additive counter specifically recalibrates the tracking of the additive fluid levels used to lower soot combustion temperature.

• ECU reset may require diagnostic tools such as VCDS or PSA-specific interfaces.
• DPF additive counter reset ensures proper system monitoring after additive refills or part replacements.

Both procedures are crucial for proper DPF functionality and emissions compliance.

Key technical specifications include:

• Capacity: Approximately 450 ml soot capacity for BlueHDi engines.
• Material: Porous cordierite ceramic monolith.
• Instrumentation: Equipped with differential pressure sensors and temperature sensors upstream and downstream to monitor clogging.
• Additive System: Integrated reservoir, pump, and injection system for fuel additives (e.g., Eolys) to reduce soot combustion temperature.
• Maximum Ash Load: Around 60 g before required cleaning or replacement.

High-quality, original, stainless steel DPFs and catalytic converters compliant with manufacturer specifications and European regulations are available directly from reputable manufacturers offering a 3-year warranty. These parts feature advanced ceramic monoliths with unique coatings for superior performance and durability.

Choosing genuine new parts rather than reconditioned or used ensures optimal engine performance, durability, and respects confidentiality and security standards during purchase and installation.

Please ensure compliance with installation guidelines and use authorized professional workshops for fitting and resetting related sensors and ECU codes.