Ford Fiesta Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on Ford Fiesta diesel models such as the 1.4 TDCi and 1.5 TDCi captures harmful soot particles from the combustion process to reduce exhaust emissions. It operates via two main stages: filtration and automatic regeneration.

During filtration, the DPF traps fine soot particles from exhaust gases. When the filter becomes saturated, sensors trigger the engine control unit to perform regeneration: this involves multiple fuel injections (main, late, and post-injection) that raise the temperature inside the filter to around 500-600°C, burning off the soot and cleaning the filter.

Common Ford Fiesta models with DPFs include:

• Fiesta VI with 1.5 TDCi engine (95 hp / 70 kW) - diesel DPF installed on models post-2013
• Fiesta VII and EcoSport II with 1.0 EcoBoost - equipped with a petrol particulate filter (PPF) version of the DPF
• Fiesta 1.4 TDCi (70 hp) - known to face frequent DPF clogging issues

Each model’s DPF system is designed specifically for its engine and emissions requirements.

Frequent issues with the Ford Fiesta DPF include :

• Rapid clogging due to repeated short urban trips preventing proper regeneration
• Failed regeneration cycles, especially for older or heavily used filters
• Signs like loss of engine power, black smoke from the exhaust, and dashboard DPF warning lights
• Possible dilution and contamination of engine oil, accelerating oil changes and reducing engine efficiency

These symptoms can adversely affect the engine’s performance and emissions compliance if ignored.

To maintain the DPF effectively :

• Drive regularly on motorways or fast roads for 20-30 minutes at 2000-2500 rpm to allow passive regeneration through heat
• Use quality fuel, and avoid frequent short trips which hinder regeneration
• Consider professional fuel additive treatments or DPF cleaning services when signs of clogging appear
• Follow Ford’s official maintenance schedule and diagnostic procedures

Proper maintenance helps extend the DPF life and preserve engine efficiency.

DPF lifespan varies widely depending on driving style and engine model. With mostly short urban trips, soot accumulates rapidly without effective regeneration, potentially leading to premature clogging within months or few thousands of miles.

Conversely, regular motorway driving can enable passive and active regeneration cycles that keep the filter cleaner and extend lifespan well beyond 100,000 miles if maintained properly.

Yes, driving at sustained motorway speeds (around 2000–2500 rpm) for about 20 to 30 minutes can help initiate or complete the DPF regeneration process by raising exhaust temperature sufficiently to burn off soot deposits inside the filter.

• This is most effective if the DPF clogging is at an early stage.
• Sometimes multiple sessions or professional cleaning may be needed for heavily blocked filters.
• Always monitor the DPF warning light and consult a Ford dealer if problems persist.

This method is a recommended preventive practice to maintain DPF function especially when the vehicle is mainly used in urban or stop-and-go traffic.

If the DPF warning light activates :

• Avoid short journeys and try a 20-30 minute drive on a motorway at moderate RPM to trigger regeneration
• Check for any fault codes with an OBD diagnostic tool or have a Ford dealer perform a scan
• Use recommended cleaning additives or seek professional DPF cleaning if advised
• Replace the DPF only if cleaning and regeneration attempts fail and after confirming the filter is irreversibly clogged

Prompt action helps reduce costly repairs and maintains engine performance and compliance.

Krosfou offers brand-new, high-quality DPF replacements manufactured in Europe with stainless steel construction and advanced monolith technology matching or exceeding original part quality. Benefits include :

• 3 years warranty covering up to 100,000 km
• TÜV certified with advanced thin-layer coating technology for enhanced durability and efficiency
• Available for various Ford Fiesta diesel engine models including 1.4 and 1.5 TDCi
• Direct factory supply at competitive prices with fast delivery options

Choosing certified, high-performance DPFs helps reduce engine issues and ensures long-term emissions compliance for your Ford Fiesta.