Hi All, have a Skoda 1.4tdi 2009 with fault code P0401. Workshop Exhaust appears and once whipped it comes back after a drive. Engine light comes on as well. I'm looking at possible faults to check/clean. I'm going to inspect EGR valve and clean, what else to check like sensors etc? No Dpf filter on this model. What sensors and other items can cause the fault. EGR valve was replaced 10k ago and car has been well maintained. Thanks in advance. 

Please note - I am not a mechanic or expert in anything.

 

Hi, welcome.  You would probably be better posting this in the Skoda Fabia Mk II forum you could cut and paste your post but adding engine code might help too, also adding more detail to your name plate on the left, similar to mine as it can sometimes save repeating information.

 

Good luck.

 

 

Edited 2 February, 20233 yr by nta16
ETA: Please note - I am not a mechanic or expert in anything.

Thanks, I couldn't open the the fabia section as it wasn't highlighted. The link seems to work Thanks

Please note - I am not a mechanic or expert in anything.

 

Give it a little while and you should get plenty of posts and help there.  Strange that the section didn't open for you as it's been fine for me but you're there now.  Good luck.

 

Edited 2 February, 20233 yr by nta16
spelling

So I've taken the EGR off and no soot what so ever. Slight oil residual but I can't see any soot. I wonder if it's even operating. As ive only had it 4 weeks, I've checked the paper work and EGR changed 3000km ago. There's a cable going to throttle body which looks like it was under tension. Was put incorrect side of cam cover vent pipe. I'm examining the cable but thinking it could be vacuum issue with the controller or possibly vacuum pump at worse case. Drives well and smooth. No stalling or anything. Does anyone have any ideas?

On 02/02/2023 at 17:26, sepulchrave said:

http://wiki.ross-tech.com/wiki/index.php/16785/P0401/00102