DPF assessment and professional cleaning
We investigate why the DPF warning has appeared before recommending regeneration, cleaning, repair or replacement.
After booking, the vehicle, customer updates, recommendations and service documents remain connected through the same customer account.
What can the assessment include?
A DPF problem can be caused by the filter itself or by another engine-management fault.
Warning lights and symptoms
DPF message, engine light, reduced power, repeated regeneration or increased fuel use.
Diagnostic fault codes
Stored faults relating to pressure, temperature, emissions and engine operation.
Pressure information
Differential-pressure readings and sensor plausibility where available.
Temperature information
Exhaust-temperature sensor behaviour and conditions required for regeneration.
Regeneration history
Available data relating to attempted or completed regeneration events.
Underlying causes
EGR, boost, injector, sensor, thermostat or engine faults that may prevent successful regeneration.
Filter suitability
Whether the DPF appears suitable for regeneration or professional cleaning.
Post-treatment check
Relevant readings and warning status are checked after the agreed treatment.
Cleaning is not always the correct repair
A damaged, heavily ash-loaded or internally failed DPF may require replacement. Any fault causing repeated blockage should be corrected to reduce the chance of the problem returning.
Possible outcomes
The correct route depends on the test results and condition of the vehicle.
A controlled regeneration may be suitable when the vehicle and filter meet the required conditions.
Cleaning may be recommended when contamination can be treated and the filter remains structurally serviceable.
A sensor, EGR, boost, fuelling or temperature-control fault may need repaired first.
Replacement may be required when the filter is damaged, unsuitable for cleaning or beyond service limits.
Before the appointment
The vehicle must be assessed safely and with enough operating information available.
Common questions about DPF Assessment & Cleaning
Can every blocked DPF be cleaned?
No. Suitability depends on the cause, contamination level and physical condition of the filter.
Why investigate the cause first?
Cleaning without correcting the reason for repeated blockage can lead to the warning returning.
Does the starting price include every repair?
No. Additional diagnostic work, parts or underlying repairs are quoted separately.
Will the warning light go out?
The result depends on the confirmed fault and successful treatment. The team checks the relevant status after the agreed work.