Ford Diesel Particulate Filter DPF Regeneration
Supported coding feature by FCOM diagnostic tool https://www.obdtester.com/fcom
What it does
- Forces an active regeneration of the Diesel Particulate Filter
- Raises exhaust temperature to burn accumulated soot
- Restores normal exhaust flow and reduces backpressure
When it is required
- High soot load detected by the ECU
- Repeated short-distance or city driving
- Passive regeneration not completed
- After resolving faults that prevented regeneration:
- Exhaust temperature sensors
- Differential pressure sensor
- EGR system
- Glow plug system
Conditions that must be met
- Engine at operating temperature
- No active fault codes related to:
- DPF
- Exhaust temperature
- Differential pressure
- Fuel level above minimum (typically > ΒΌ tank)
- Stable battery voltage (charger recommended)
- Vehicle in a well-ventilated area
What happens during regeneration
- ECU increases exhaust temperature using:
- Post-injection
- Boost pressure control
- EGR reduction
- DPF temperature rises to regeneration range
- Soot mass is reduced
- Backpressure decreases
If regeneration is not performed
- DPF blockage worsens
- Engine may enter limp mode
- Increased fuel consumption
- Risk of damage to:
- Turbocharger
- Exhaust components
- Temperature sensors
After regeneration
- Check soot load and differential pressure values
- Clear DPF-related warnings if necessary
- Perform a short test drive
- If soot level remains high:
- DPF may require cleaning or replacement