Opel Zafira Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on Opel Zafira diesel vehicles (such as 1.6 CDTI 136 hp, 1.9 CDTI 150 hp) is a device integrated into the exhaust line after the turbocharger. It captures harmful fine cancer-causing particulate matter emitted by diesel exhaust gases. The DPF operates in two main cycles: filtration where soot accumulates and forms a layer reducing performance and increasing fuel consumption, and regeneration where accumulated soot is burned off at high temperatures controlled by temperature sensors, pressure sensors, and vehicle electronics.

Common signs of DPF clogging include loss of engine power, illuminated engine warning light, excessive black smoke, frequent or forced regenerations especially at low engine speeds, increased fuel consumption, and possible EGR or injector faults.

DPF clogging is accelerated by frequent short urban trips that do not allow passive regeneration, as well as malfunctioning injectors that increase soot emissions. The 1.6 CDTI can quickly develop visible soot buildup leading to smoke and clogging, while the 1.9 CDTI can also suffer from similar rapid contamination issues.

• Short trips prevent engine from reaching optimal temperature for soot burn-off.
• Faulty fuel injectors increase soot production.
• Blocked soot restricts filter function leading to power loss.

Preventive longer drives and injector diagnostics are recommended for better DPF health.

The main methods include:

• Chemical Cleaning without removal: Injecting cleaning agents (e.g., Mecatech, Xenum) via exhaust temperature sensor followed by forced regeneration at 2500 rpm. It liquefies soot deposits and cleans both DPF and catalytic converter. This is cost-effective and avoids dismantling.
• Forced Regeneration using diagnostic tools: Via Opel diagnostic menus to start diesel particulate filter regeneration. Repairs may include replacing air flow sensors and exhaust mounting parts if worn.
• Complete Line Replacement: For severe clogging, replacing the entire DPF and exhaust mounts (especially for Zafira B 1.9 CDTI).
• Hydrogen Carbon Cleaning: Hydrogen admission cleaning to reduce deposits in engine and DPF, improving fuel consumption and emissions, extending engine life.
• Fuel Additives: Specialized additives such as Sweeper10 support running maintenance by partially cleaning soot.

Diagnostics should also include injectors and EGR system checks using tools such as Wurth diagnostic scanners.

To maintain DPF health and avoid clogging:

• Drive longer distances regularly to allow passive regeneration at proper engine temperature.
• Avoid frequent short urban trips that prevent filter regeneration.
• Maintain injectors and replace faulty parts promptly.
• Use recommended fuel additives and periodic hydrogen carbon cleaning for prevention.
• Have the DPF and related sensors checked by professionals using diagnostic tools.

If the DPF warning light is illuminated, it may indicate a clogged filter or system fault. Immediate actions include:

• Check for fault codes with a diagnostic tool to identify the exact issue.
• If safe, take a longer drive at higher RPMs (around 2500 rpm) to trigger forced regeneration.
• Use professional DPF cleaning products and services if warning persists.
• Consult a qualified garage or service center for injector and sensor inspection.

Ignoring DPF warnings can lead to engine performance loss and potential costly repairs.

Yes, chemical cleaning without dismantling is possible by injecting special cleaning fluids via the exhaust gas temperature sensor followed by a forced regeneration procedure. This method is economical, cleans both the DPF and the catalytic converter, and helps restore filter efficiency.

• Cleaning fluids dissolve soot and deposits inside the filter.
• Forced regeneration burns off loosened soot residues at high temperature.
• Diagnostic checks are included to verify filter condition before and after cleaning.

However, severe clogging may still require physical removal and professional cleaning or replacement.

We recommend ordering original, brand-new Diesel Particulate Filters manufactured under strict European standards with a 3-year warranty. Our products are made with high-grade INOX 409 stainless steel and advanced honeycomb monoliths providing superior durability and performance, certified by TÜV SÜD Automotive GmbH.

• Reliable quality that meets or exceeds manufacturer specifications.
• Available for most Opel Zafira diesel models with guaranteed compatibility.
• Direct factory delivery ensures competitive prices and quick shipping.
• Support available for part identification by VIN and sensor location details.

Contact us for more details, professional support, and to check stock availability and terms including safety, rights, rules, subscriptions, and privacy.