New DPF fitted but DPF light still on - Soot load stuck at 20%

[dmorts]

I have a Seat Leon 170 TDI FR that has a brand new DPF fitted from Euro car parts

However, the soot level in the filter will not go below 20%, at least that is what the ECU is saying. The two garages (Seat and VAG indie) it has now been to have reported that the soot level will drop to 20% on regen cycle but then quickly gets back up to 50% (e.g. with in 5 miles of driving, then regen starts again). It refuses to drop below 20%

The original DPF had become too clogged so it was change or delete time. Went with change as I'd like to sell the car soon. It's had a new DPF and new pressure and exhaust sensor (the after DPF one). No coil light or MIL light now but DPF light will not go out.

It could be a sensor fault somewhere. The ECU relies on the pressure sensor (which senses difference before and after DPF), the temp sensors before and after the DPF and the air mass meter to calculate the soot load. So there is a chance that a defective sensor somewhere could screw up the calculation. However all sensors are reporting operating in normal range and no faults are logged.

The VAG independent garage had the pressure sensor out of the DPF (tubes disconnected) and it still wouldn't drop below 20%. It should say 0% because there is no pressure difference...:confused:

Apparently ECU has been reset to know it has a new DPF too.

Anyone any ideas?

[hollow]

was the new dpf adapted as a new one ?

[hobnob1]

Did you ever resolve this issue? I have a 2010 Skoda Superb TDI 170 which has just been fitted with a new DPF and despite the garage telling the car a new filter is fitted the car still believes it is clogged. Before the car had a new DPF fitted the DPF sensor was also changed (and adapted so I am told). With the fault still there am wondering if the car ever needed a new DPF in the first place.

[gerryc]

Did you ever resolve this issue? I have a 2010 Skoda Superb TDI 170 which has just been fitted with a new DPF and despite the garage telling the car a new filter is fitted the car still believes it is clogged. Before the car had a new DPF fitted the DPF sensor was also changed (and adapted so I am told). With the fault still there am wondering if the car ever needed a new DPF in the first place.

how do you adapt the sensor? ive replaced mine twice and still have the problem, but adapting it was never mentioned

[Fsigns]

Went with my car to Audi after fitting a second hand dpf as mine was over 50% clogged (it stayed like that in Ecu).I was told by a technician that the new filter has to be adapted from the main computer in Germany.
they wouldn't do it because it could only be done when reset to new (0%) and mine wasn't.
If they did , my filter would stay in their database as "brand new " and I could easily claim a new one if it clogged again or worse if the car went in fire (you should see my wife's face)