DPF: Reading ash loading level @140,000 mi

[kpm278]

Hi all

I'm checking my service intervals to see what needs doing next, and I noticed:

DPF: Reading ash loading level
first from 140,000 mi
then every 20,000 mi

What does that mean - have the DPF checked, or replaced?

Does sonic cleaning for DPFs exist, is it snake oil or worth doing? Or just give it the old italian tune up?

Thanks, Kristian

 

[Peter Peter]

Hi all

I'm checking my service intervals to see what needs doing next, and I noticed:

DPF: Reading ash loading level
first from 140,000 mi
then every 20,000 mi

What does that mean - have the DPF checked, or replaced?

Does sonic cleaning for DPFs exist, is it snake oil or worth doing? Or just give it the old italian tune up?

Thanks, Kristian

Hi I had carbon clean last year in november or december I think it takes 30 mins.. £30

 

[Rideen]

Hi all

I'm checking my service intervals to see what needs doing next, and I noticed:

DPF: Reading ash loading level
first from 140,000 mi
then every 20,000 mi

What does that mean - have the DPF checked, or replaced?

Does sonic cleaning for DPFs exist, is it snake oil or worth doing? Or just give it the old italian tune up?

Thanks, Kristian

Means you/your mechanic should do DPF ash reading - quite an easy thing to do with VCDS/OBDEleven.

I think these filters hold up to 70g of ash (can be checked with the same diagnostic tool).

 

[cuke2u]

Hi I had carbon clean last year in november or december I think it takes 30 mins.. £30

Doesn't a carbon clean just cleans the engine not the dpf?

 

[Peter Peter]

Doesn't a carbon clean just cleans the engine not the dpf?

Yeah engine and turbo too. Guy sticked pipe into the air intake ... For 30 mins...
No, no DPF... If you want dpf clean you need to remove part of exhaust with dpf and submerged it in ultrasonic bath dissolving chemical and then blow it with jet wash bigger job ...

 

[Retroman]

As above, carbon is not the problem with a DPF and so "carbon cleaning" will not help. The normal, healthy DPF is designed to burn off carbon (by its range of regens) and turn it into ash which is ejected from the exhaust. A tiny amount of this ash remains in the DPF and over a long period of normal usage this ash will build up and hamper the effectiveness of the DPF. Removing this ash is a specialist job which needs the DPF to be removed or completely replaced.

 

[Peter Peter]

As above, carbon is not the problem with a DPF and so "carbon cleaning" will not help. The normal, healthy DPF is designed to burn off carbon (by its range of regens) and turn it into ash which is ejected from the exhaust. A tiny amount of this ash remains in the DPF and over a long period of normal usage this ash will build up and hamper the effectiveness of the DPF. Removing this ash is a specialist job which needs the DPF to be removed or completely replaced.

Audis from 2013 has no issues with DPF at all.. never had problems over year only audis 2005 -2012 constantly popped up on dash..