Mazda 5 Diesel Particulate Filter DPF

The Diesel Particulate Filter (DPF) on your Mazda 5, especially models like CR19 2.0 diesel 143 hp, captures and removes fine particulate matter (PM) from exhaust gases. This reduces harmful emissions. The DPF regenerates automatically during normal driving by burning off collected soot, but this can be interrupted if the car is mostly driven at low speeds (<15 km/h), on short trips (<10 min), or when cold.

Common warning signs include:

• Message or warning light indicating "Excessive soot accumulation in DPF", signaling that particulate matter is not being burnt automatically.
• Flashing or steady DPF malfunction light indicating possible power restrictions, unusual exhaust noises or smells, and potential engine failure if ignored.
• Noticeable loss of engine power often accompanies DPF faults.

If these symptoms appear, immediate attention is advised.

Mazda recommends the following manual regeneration procedure to eliminate particulate buildup:

• Wait until the engine coolant temperature reaches at least 80°C.
• Press the accelerator and maintain a speed of 20 km/h or higher for 15-20 minutes.

If the warning light remains on or flashes after this, consult an authorized Mazda mechanic promptly to avoid engine damage.

Available professional solutions include:

• Chemical cleaning with specialised equipment (e.g., Turbo-Tec process) that burns off soot deposits and restores DPF performance. This comes with a 24-month unlimited km guarantee and is ISO 9001:2015 certified.
• Forced manual regeneration and cleaning tutorials for self-service, though they carry a risk of improper handling.
• Complete DPF replacement is recommended between 120,000 to 160,000 km. Genuine new DPF parts with factory quality are available.

Always refer to experts for major repairs to ensure vehicle safety and compliance.

A non-official ODB reset procedure sometimes reported includes:

• Connect an ODB diagnostic tool.
• Sit in the driver’s seat and fully press the accelerator 5 times.
• Turn off the ignition and disconnect the ODB cable.
• Turn ignition back on — the glow plug light should flash 5 times and the DPF warning should go off.

Use with caution and verify with professionals, as improper resetting can cause engine issues.

To keep your DPF in good condition:

• Avoid frequent short trips or continuous low-speed urban driving which prevents proper DPF regeneration.
• Prefer highway driving occasionally to enable passive DPF regeneration.
• Regularly check the DPF through diagnostic tools like ODB to monitor its condition.
• Follow maintenance intervals and manufacturer recommendations for inspection and replacement.

Refer to official Mazda manuals and trusted diagnostics sources for accurate guidance.

DPF replacement costs vary depending on part quality and source. Genuine new DPFs produced with high-quality stainless steel and monoliths offer the best reliability and durability. Prices reflect the advanced technology and come with a 3-year warranty limited to 100,000 km usage. Ordering directly from trusted manufacturers ensures compliance and high standards.

Useful resources include:

• Official Mazda owners manuals and technical documentation that cover DPF specifics.
• Professional cleaning service providers who may offer demonstration videos.
• Online forums and communities discussing diagnostic procedures and personal experiences with Mazda 5 DPF issues.
• Authorized Mazda garages for comprehensive diagnostics and repairs.

Always rely on expert advice and verified sources to maintain safety and performance of your engine and exhaust system.