Catalytic converter and DPF restoration
Restoreor replace?
Tick the symptoms or enter the fault code - in 30 seconds you will see whether the part can be restored.
Or tick the symptoms in the check form below.Detailed check
Symptoms, code and car in one form
The more we know, the more precise the answer: tick the symptoms, enter the fault code and pick the car. The result shows whether the part can be restored, how serious it is and what to do next.
- Symptoms and fault codes
- Make, model and year
- Photo - only to read the part number
Cleaned with OTOMATIC DPF Platinum AI equipment · flow checked after cleaning
Three routes
The right solution for each case
Restoration
We clean a DPF or catalytic converter clogged with soot or ash - no need to buy a new one. We find the cause before the work and check the flow after it.
About cleaning
Replacement part
If the ceramic is broken, melted or cracked, we find a suitable replacement for your car.
About replacements
Sell the old one
If restoring is no longer worth it, we buy the old converter. You see the indicative price in the catalogue right away.
Find the priceHonest about restoration
When restoration helps - and when it does not
Helps
- The DPF is clogged with soot or ash (P244B, P2463, DPF light on)
- There are deposits on the converter, but the ceramic is intact
- Power drops, fuel consumption rises, the filter regenerates often
- The cause (sensor, injectors, EGR) has already been fixed
Does not help
- The converter rattles - the core has broken up
- The ceramic is melted or cracked (often P244A, P2002)
- The converter is poisoned by oil or coolant
- The cause is not fixed - misfires, rich mixture, burning oil
That is why we always find the cause first and never promise in advance that the fault code will disappear. The result is confirmed by measurement.
Process
How restoration works
We do the work in our workshop in Riga, Jūrkalnes iela 62. You know every step in advance.
- 01
Diagnostic
We read the fault codes, check the sensors, pipes and exhaust leaks, and assess the filter.
- 02
Removal from the car
We safely remove the DPF or catalytic converter from the car.
- 03
Cleaning in three stages
On OTOMATIC DPF Platinum AI equipment: dry blow-out, washing with a solution under pressure, drying and blow-out.
- 04
Check and refitting
We check the filter's flow and operation, refit it and give you a cleaning report.
Roadworthiness test 2026
A damaged DPF no longer passes the test
Since 1 January 2026 the CSDD roadworthiness test measures particles on diesel cars first registered from 2013. A removed or damaged filter fails this measurement. Restoration is a legal way to bring the filter back without replacing it.
Source: Cabinet Regulation No. 295, Annex 1, 8.2.2.3 (likumi.lv)Buy-back
Not worth restoring? We buy the old converter
The price depends on the model and precious metal (platinum, palladium, rhodium) content. The catalogue shows an indicative price; the final one is set after inspection.
FAQ
Frequently asked questions
Did not find the answer?
Call or message us - we will explain and recommend the right solution.
Contact usWe restore (clean) catalytic converters and DPFs, match and fit replacement parts, buy old converters and do chiptuning. Our workshop is in Riga, Jūrkalnes iela 62.
Yes. Before any work we read the fault codes and find the cause, so we can offer the right solution for your car - with no unnecessary work.
Most jobs are done within one day. We give you the exact time after diagnostics - it depends on the car model and the scope of work.
It depends on the service and the car. The price list for catalytic converter and DPF cleaning is on the "DPF cleaning" page (we confirm the final price after diagnostics), the buy-back price depends on precious metal content, chiptuning on the scope of work. No hidden costs.
Not always. P0420 means the catalyst efficiency is below threshold, but the cause can also be an oxygen sensor, an exhaust leak or software. Check your case on the home page or book a diagnostic.
Request
Book a check or a job
Leave your contact details - we will get back to you, clarify the situation and agree on a time.
- Phone+371 29 007 007
- Phone+371 28 777 998
- WhatsApp+371 20 099 444
- Emailinfo@autokatalizatori.lv
- AddressJūrkalnes iela 62, A7 bokss, Rīga
