DPF Cleaning

Professional DPF Diagnostics & Off-Car Cleaning in Hedge End

If you’re looking for reliable DPF cleaning in Southampton, you need more than a quick chemical flush or guesswork repairs. At James Diggens Auto Services, we specialise in diagnostic-led DPF cleaning, helping drivers and local garages resolve DPF faults properly and avoid unnecessary replacement costs.

With over 10 years’ experience working specifically with diesel particulate filters, we focus on restoring correct DPF operation, not masking symptoms.

DPF Specialists You Can Trust

DPF warning lights, limp mode, failed regenerations and loss of power are often caused by underlying faults, not just a blocked filter. That’s why our approach to DPF cleaning in Southampton always starts with accurate diagnostics.

We invest the time to understand why the DPF has failed, ensuring the cleaning process delivers a long-term fix rather than a temporary improvement.

Diagnostic-Led DPF Cleaning in Southampton

Before any cleaning is carried out, your vehicle undergoes a full diagnostic assessment using OEM-level diagnostic equipment. This allows us to identify whether DPF cleaning is suitable and what caused the issue in the first place.

Our diagnostic process includes:

• Fault code and live data analysis
• ECU-measured DPF differential pressure readings
• Pressure testing at idle and 2,500rpm
• Exhaust temperature and regeneration status checks Clear distinction between soot loading and ash accumulation

This diagnostic-first approach ensures DPF cleaning is only performed when it will be effective — and that supporting faults are resolved to prevent repeat failures.

Advanced Off-Car DPF Cleaning

For vehicles that qualify, we carry out professional off-car DPF cleaning, which is far more effective than on-car or chemical cleaning methods.

The DPF is safely removed from the vehicle and cleaned using specialist equipment designed to remove soot, ash and oil contamination from deep within the filter structure.

Our off-car cleaning process includes:

• Pre-clean restriction and flow testing
• Controlled low-pressure cleaning
• Progressive pulsed high-temperature wash cycles
• Reverse-flow deep ash removal
• Post-clean testing to confirm restored flow and efficiency

In many cases, this restores the DPF to near-new performance, extending its lifespan and helping customers avoid the high cost of DPF replacement.

If you’re experiencing DPF warning lights, reduced performance, or repeated regeneration issues, don’t wait for an expensive breakdown or replacement. For trusted DPF cleaning in Southampton, contact James Diggens Auto Services today. Our diagnostic-led approach ensures your DPF is cleaned only when appropriate, restoring performance and reliability while avoiding unnecessary costs. Call now or book an inspection to get your vehicle back to full health.