DPF cleaning specialists
DPF cleaning specialists: fast, effective, Auckland based
If your vehicle has a blocked DPF or warning light, our workshop provides professional DPF cleaning, diagnostics and flow testing to restore performance and prevent expensive filter replacement. We service trucks, utes, machinery and commercial vehicles across Auckland and Northland.
Why choose Simms for dpf cleaning
DPF cleaning experts
We specialise in diesel particulate filter diagnostics, cleaning and testing for trucks, utes, machinery and commercial vehicles across Auckland and Northland.
Advanced cleaning & testing
Our specialised DPF cleaning equipment removes soot, ash and oil contamination while flow testing ensures the filter is restored to proper operating condition.
Fleet & commercial focused
We understand downtime costs money. Our structured cleaning and testing process helps keep your trucks, machinery and fleet vehicles running efficiently.
Quality service & workmanship
Every DPF is inspected, cleaned and tested before leaving our workshop to ensure reliable performance and prevent repeat blockages.
Warning light on? Losing power or high fuel consumption?
Blocked diesel particulate filters (DPF) can cause loss of power, increased fuel consumption, warning lights and vehicles going into limp mode. If you're experiencing any of the following issues, a proper DPF inspection and flow test can identify the blockage and determine whether cleaning is required.
Common signs your DPF may need cleaning:
- DPF warning light or check engine light
- Loss of power or vehicle going into limp mode
- Increased fuel consumption
- Frequent regenerations
- Excessive exhaust smoke
Our DPF cleaning process
We follow a structured DPF cleaning and testing process to restore exhaust flow, reduce back-pressure and ensure the filter is operating correctly — helping avoid unnecessary replacement costs.
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Inspection & flow test
We inspect the DPF and measure restriction and back-pressure to determine the level of blockage before cleaning begins. Proper testing ensures cleaning is the correct solution.
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Professional DPF cleaning
Using specialised DPF cleaning equipment, we remove soot, ash and oil residue from the filter to restore airflow and engine performance.
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Testing & reinstallation
After cleaning, we re-test the DPF to confirm flow has been restored, then reinstall the unit and clear any related fault codes.
Request a DPF inspection
- Typical response time: same business day
- NO-OBLIGATION assessment
- Experienced diesel technicians
- Auckland workshop
Tell us your vehicle, engine type and symptoms — we’ll recommend the most cost-effective DPF cleaning or repair solution based on proper testing.
Frequently asked questions
Clear answers to common questions about DPF cleaning, diagnostics, blockages and workshop turnaround times.
09 579 1159How do I know if my DPF is blocked?
Common signs include loss of power, increased fuel consumption, DPF warning light, frequent regenerations, excessive smoke or the vehicle going into limp mode.
How long does DPF cleaning take?
Most DPF cleaning jobs take 1–2 working days depending on the level of blockage, testing requirements and vehicle type.
Is cleaning cheaper than replacing a DPF?
Yes. In most cases cleaning a DPF is significantly cheaper than replacement and restores proper exhaust flow and performance.
Where is your workshop?
You’re welcome to visit our Auckland workshop and showroom at:
77 Leonard Road, Penrose, Auckland 1060
We also support courier repairs nationwide.
Do I need to remove the DPF from the vehicle?
Yes, in most cases the DPF needs to be removed so it can be properly cleaned and flow tested using specialised equipment.
Can you clean DPFs for trucks and machinery?
Yes, we clean DPFs for trucks, utes, commercial vehicles, agricultural and industrial machinery.
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