Fiat Idea Diesel Particulate Filter DPF (2003-2012)

The Fiat Idea diesel models, especially the 1.3 Multijet 16v (engine code 2S235) and 1.3 JTD 70 16V, are equipped with a Diesel Particulate Filter (DPF). This device, mandatory since 2011, reduces harmful fine particulate emissions from diesel combustion. Located in the exhaust line between the catalytic converter and rear silencer, the DPF traps soot in a porous honeycomb structure made of cordierite or silicon carbide, helping to protect the environment and comply with emission standards.

The DPF filters exhaust gases after the turbo and catalytic converter, retaining 95-99% of fine particulate matter (soot). Over time, soot accumulates and can reduce engine performance by causing power loss and increased fuel consumption. The engine management system automatically initiates regeneration cycles to burn off soot at high temperatures (500-600°C).

• Passive regeneration occurs during high-speed driving.
• Active regeneration injects extra fuel to increase exhaust temperature when needed.
• The DPF's differential pressure sensor monitors clogging levels.

Fiat Ideas may have diesel DPFs without additive or with an AdBlue injector (Euro 6), and some models include integrated catalytic converters.

Common signs of a blocked DPF include:

• DPF warning light illuminated on the dashboard
• Degraded engine mode with reduced power
• Black smoke emissions
• Frequent unsuccessful regeneration attempts
• Burning smell from the exhaust

Clogging often results from short urban trips, poor-quality diesel fuel lacking additives, or a dirty Exhaust Gas Recirculation (EGR) valve.

There are several cleaning and maintenance methods:

• Without removal: Access through the differential pressure sensor, inject a cleaning product (like specific DPF cleaner or vinegar) and let it act for 15 minutes. Then drive 15 minutes at idle and 30 minutes at high rpm (~4000–4500 rpm or 110 km/h) to purge soot with white smoke being normal during this process.
• Fuel additives: Add special DPF cleaning additives to your fuel tank, then drive at highway speeds for passive regeneration.
• Good habits: Use premium diesel fuel, avoid excessive city driving, and regularly inspect/clean the EGR valve.
• Forced regeneration: Use an OBD diagnostic tool to manually initiate DPF regeneration if automatic cycles fail.

Regular maintenance prevents major engine issues and prolongs DPF lifespan.

Below are common cleaning approaches for a diesel particulate filter on the Fiat Idea:

• Cleaning via pressure sensor: Remove sensor, inject cleaner, wait 15 minutes, then drive 45 minutes at high rpm. Duration: 1 hour plus driving. Cost: €5–20.
• Fuel additive: Add additive at fill-up, drive on highway for 30–60 minutes. Cost: €10–30.
• Passive regeneration: Maintain 110 km/h speed for 30 minutes while driving. Cost: Free.

Consistent cleaning ensures proper engine function and emissions control.

If the DPF is irreversibly clogged or damaged, replacement may be necessary. Genuine or equivalent new DPFs are available for the Fiat Idea 1.3 Multijet 16v (engine code 2S235) typically priced between €300 and €800, including mounting kits.

Replacement involves:

• Using proper tools such as a jack and torque wrench
• Following step-by-step illustrated manuals or videos
• Allowing roughly 2 to 4 hours for an experienced DIYer

Total costs including labor usually range from €500 to €1500, with diagnostic checks recommended beforehand.

Common checks include monitoring the DPF warning light and engine symptoms like power loss or excessive smoke. Using an OBD2 diagnostic tool can read related error codes (such as P2002 or P2459) and provide pressure sensor data indicating clogging level.

• If frequent regeneration fails, or symptoms persist, professional inspection is advised.
• A specialist garage or dealer experienced with Fiat diesels can perform accurate diagnostics and repair.

Avoid disabling or removing the DPF as it is illegal and causes failure in vehicle inspections.

Krosfou offers brand-new, high-performance DPFs made with INOX 409 stainless steel and premium ceramics, fully compliant with manufacturer specs and European regulations.

• 3-year warranty covering up to 100,000 km
• Certified quality by TÜV SÜD Automotive, equal or superior to original parts
• Manufactured in Europe with advanced technology for durability and performance
• Direct-from-factory supply, ensuring best price-quality ratio
• Free returns within 30 days for unused products
• Technical support and detailed installation guides available

Choosing Krosfou guarantees reliability and helps protect your engine while reducing harmful diesel emissions of your Fiat Idea.