C5 Diesel Filter

wigelywoo · Post by **wigelywoo** » 24 Dec 2005, 10:58

I kept getting the warning "Unblock Diesel Filter" showing on screen.
I changed the filter, but, the warning still comes up but not as often.
Any ideas
Thanks in advance

Horse · Post by **Horse** » 24 Dec 2005, 12:44

It may have registered a fault in the ECU, you wil need to get the fault cleared.

wheeler · Post by **wheeler** » 24 Dec 2005, 17:13

What mileage has it done ? that warning means it is due a particle filter (FAP) change & Eolys fluid refill.

pugxpert · Post by **pugxpert** » 24 Dec 2005, 17:53

you will need to check your additive tank is not empty first if that is ok and you have already changed fap filter you will need to get your counters reset in additive ecu this tells engine ecu how much additive is loaded in fap filter,also driving the car for 20 mins at a constant speed say 100 kmh this should trigger the engine ecu to start regenerating filter to unblock it.(if your additive tank is empty this will not work).one other fault you may have is with your pressure differential sensor for the particle filter,if this is faulty you will get filter blocked warning as this is where it gets its information from for the state of the filter,some 307 sensors were prone to getting water inside them,hope of some use