Hello everyone, I have an Audi A3 2.0 TDI 104kw 140HP engine code is CBAB.
I got a weird issue where the DPF started to accumulate 20g of soot and the ECU never started the regen process it was usually doing that as soo as it reached >=17g of soot, usually 300-400km I knew it has to make is regen cycle and it never started. Happened twice already the first time I just started a regen and the residual left was 5g of soot.
Now it happened again, I usually track my regens, I was at 500+ km and no regen, plugged my VCDS and soot was 25g, I was like *** this is wrong!
What I did this time is to completely reset the DPF data (see picture) and then did a regen while doing 40mph everything went well and now values are ok again.
Differential sensor looks all good, idle at 5-10mBar and that is within specs. (while accelerating it goes up indicating is all ok), offset is 0mBar, again in specs.
Pictures before and after the regen + delete DPF data from ECU:
ibb.co
ibb.co
TLDR: My DPF was usually starting to regen at 17g of soot, now it exceeds 25g and still it does not start to regen by itself! Why does it do that? All sensors are ok! checked with VCDS.
I got a weird issue where the DPF started to accumulate 20g of soot and the ECU never started the regen process it was usually doing that as soo as it reached >=17g of soot, usually 300-400km I knew it has to make is regen cycle and it never started. Happened twice already the first time I just started a regen and the residual left was 5g of soot.
Now it happened again, I usually track my regens, I was at 500+ km and no regen, plugged my VCDS and soot was 25g, I was like *** this is wrong!
What I did this time is to completely reset the DPF data (see picture) and then did a regen while doing 40mph everything went well and now values are ok again.
Differential sensor looks all good, idle at 5-10mBar and that is within specs. (while accelerating it goes up indicating is all ok), offset is 0mBar, again in specs.
Pictures before and after the regen + delete DPF data from ECU:
Screenshot-2025-01-11-154312 hosted at ImgBB
Image Screenshot-2025-01-11-154312 hosted in ImgBB
ibb.co
Whats-App-Image-2025-01-11-at-20-25-01 hosted at ImgBB
Image Whats-App-Image-2025-01-11-at-20-25-01 hosted in ImgBB
ibb.co
TLDR: My DPF was usually starting to regen at 17g of soot, now it exceeds 25g and still it does not start to regen by itself! Why does it do that? All sensors are ok! checked with VCDS.