FAP (DPF) Regeneration 'Antipollution Fault' HDi

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Tips for a Diesel powered Citroen C3

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My Name: Arfur Dent

Posts: 3547
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
Engine name: DV4 16-valve diesel (90 PS)
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If you get the warning 'Antipollution Fault' and your Citroen C3 is fitted with a FAP or DPF then this can indicate a problem with the FAP (or DPF) system and the quickest and easiest way to diagnose and even repair the problem is by adding This DPF cleaner to a tank of fuel and continue your normal driving. The additive will remove the DPF soot blockage and clear the fault (it it was a DPF soot fault).

The FAP is the 'Filtre à particules' which is Citroen term for 'Diesel Particulate Filter'

In normal running the FAP is regenerated every so often during driving. When the computer has sensed the correct driving conditions and the state of the filter the injector timing is altered and Eolys/Infineum/Powerflex/Rhodia DPX42 fluid is injected into the fuel tank to alter the burn characteristics of the fuel to raise the exhaust temperature enough to regenerate the filter.

The problem you may have encountered is that the computer never sees the correct driving conditions (lots of short journeys so the system doesn't get up to temperature) or the fluid is exhausted (refill kits available here).

You may also have problems if you only put a small quantity of fuel in at a time, rather that filling up as a high fuel tank level may be required to trigger the automatic regeneration.

In any case, the quick fix to regenerating the filter (and restoring filter performance) is to force a regeneration with a supplemental dose of this concentrated Diesel particulate filter cleaner from Amazon.

This doesn't refill the fuel tank additive container with Eolys type fluid (available here), so if the tank is empty, it should be refilled at some point. If the Anti-pollution Fault was due to short journeys, the problem may disappear if the driving routine changes.

For ongoing assistance to the DPF regeneration and cleaning, particularly useful if you don't drive the car often enough in a way that meets the DPF regen threshold, an addition of Regen Plus+directly into the fuel tank at every fill-up of fuel is useful. The regular dose will bypass the computer control and force the filter to regenerate at a lower temperature as you drive can save a huge repair bill for the DPF when it fails the MOT test.

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My Name: janusz

Posts: 1
Joined: Tue Jul 24, 2012 8:28 pm


That's the only WORKING information I've found about this problem!!!! That's work with my C5. In addition, I've first change diesel fuel filter (because that not been done so long), and after that I've use Diesel Particulate Filter Cleaner from Wynn's added to full fuel tank.Clean take 2 days for me.I've done quick journey (about 30 miles),on dual carriageway in late hours,keep about 80m/h all the way.
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