Description

This is a professional ultrasonic and thermal cleaning service for the genuine Skoda diesel particulate filter (DPF) fitted to the Skoda Octavia 2.0 TDI, specifically for models manufactured between 2004 and 2010 with BKD or AZV engine codes. Our process restores a blocked DPF to over 98% of its original efficiency, providing a cost-effective and reliable alternative to a full replacement unit.

The diesel particulate filter is a critical component of the Euro 4 exhaust system, designed to capture and store harmful soot particles from the engine’s emissions. Over time, particularly with frequent short journeys, the filter becomes saturated with soot and incombustible ash. The vehicle’s ECU attempts to clear this soot through a process called regeneration, but if conditions aren’t met or other engine faults exist, the DPF will become progressively blocked, leading to warning lights, reduced power (‘limp mode’), and eventual vehicle breakdown.

Common failure modes for this DPF include simple soot and ash accumulation from a restrictive driving cycle, contamination from a failing turbocharger leaking oil into the exhaust, or issues with upstream components like the EGR valve or temperature and pressure sensors. In severe cases, repeated failed regeneration attempts can cause the internal ceramic monolith to crack, at which point cleaning is not possible and a replacement is required. At Gap Turbos, our service begins with a flow test and inspection to confirm the internal structure is intact. We then use a multi-stage process involving ultrasonic cleaning and controlled thermal regeneration in a specialist kiln to safely remove all soot and ash. This is significantly cheaper (often 70-90%) than buying a new unit from a main dealer.

What this diesel particulate filter (DPF) fits

This cleaning service is for the original equipment (OE) DPF, part numbers BM11056 and 1K0254705LX, fitted to the following vehicle:

• Make: Skoda
• Model: Octavia
• Engine: 2.0 TDI
• Engine Codes: BKD, AZV
• Years: 2004, 2005, 2006, 2007, 2008, 2009, 2010
• Euro Class: Euro 4

All work is carried out at our Birmingham workshop. Please contact Gap Turbos with your vehicle registration to confirm compatibility and receive a firm quote. Our DPF cleaning services are backed by a comprehensive 12-month warranty.

Specifications

Vehicle fitment

• Skoda Octavia 2.0 TDI

Common faults & troubleshooting

• DPF warning light illuminated on the dashboard: This is the ECU’s primary indication that soot levels are too high and a regeneration is required or has failed.
• Vehicle enters ‘limp mode’ with severely restricted power: The engine management system limits performance to prevent damage when excessive exhaust backpressure is detected.
• Noticeably worse fuel consumption: A blocked filter forces the engine to work harder to expel exhaust gases, which directly increases fuel usage.
• Strong, acrid smell from the exhaust: This can be a sign of a failed or incomplete regeneration cycle, where raw diesel is being injected into the hot exhaust.
• Engine oil level rising above maximum: During failed regeneration attempts, unburnt diesel can seep past the piston rings and contaminate the engine oil, dangerously diluting it and raising the level.
• Hesitation or sluggish performance during acceleration: The restriction in the exhaust system caused by a clogged DPF can cause a flat spot or delay in power delivery.

Fitting notes for this unit

• Diagnose the root cause first: Before refitting a cleaned DPF, you must identify and fix why the original unit failed. Check turbocharger seals, EGR valve operation, injectors, and all relevant sensors (temperature and differential pressure).
• Reset ECU DPF values: After installation, it is critical to use a suitable diagnostic tool to reset the DPF ash and soot counters in the ECU. Failure to do this will mean the system still thinks the old, blocked filter is installed.
• Inspect pressure sensor pipes: Carefully check the small metal pipes that connect to the differential pressure sensor for blockages, cracks or corrosion. Always replace the short rubber hoses connecting them as they are a common failure point.
• Always use new gaskets and fixings: To prevent exhaust leaks, which can disrupt sensor readings, install new gaskets at the turbocharger outlet and the DPF outlet flanges. Torque all bolts to the manufacturer’s specified values.
• Perform a static regeneration: Once the vehicle is back together and all ECU resets have been performed, initiate a forced static regeneration using your diagnostic tool. This confirms the entire system is functioning correctly under controlled conditions.
• Change engine oil and filter: If the engine oil was found to be diluted with diesel, an oil and filter change is mandatory to prevent premature engine wear and potential damage.

Alternative part numbers

This turbo is also referenced by:

• 1K0254705LX — Volkswagen DPF OEM 1K0254705LX (VW Golf 2.0 TDI, BKD/AZV, Euro 4)

Frequently asked questions