The check engine light came on my wife's 2013 Superb 1.6 TDi last week. The error seems to point towards the EGR valve. We have the car about 8 years and after the first 6 months, the EGR valve went and was replaced under warranty. That time, the car went into limp mode and was running very badly. This time the car is running fine. I cleared the code a couple of times and it stays off for a week or so and then comes back on.

Has anyone had this and the car has run ok or are we in a situation where it will let us down. It's frustrating that this is such a big job given the location otherwise I could take it out and clean it and see if that does anything. It's so much work to get it out that you'd be made not to replace it.

Thanks,

Hi @Tropheus , the above is a guide i wrote to tracking a dying egr from my 1.6tdi cayc experience.

its as detailed a breakdown of what you can expect to happen as it gets worse.

10 hours ago, mac11irl said:

Hi @Tropheus , the above is a guide i wrote to tracking a dying egr from my 1.6tdi cayc experience.

its as detailed a breakdown of what you can expect to happen as it gets worse.

Thanks for this. I'm not getting any of those symptoms at the minute. Certainly no flashing glow plug light. As I mentioned, this is different to our experience when it went about 7 years ago. I have read references to the DPF being blocked as a possible cause. The car does get a lot of motorway driving and 2-3 long runs a month so I would have thought the opporutnity to regen wasn't an issue.

I would expect to see the dpf light coming on if it was related to failed regens and or blocked.

the " joy" of egr failure is that it is slow, and intermittent to start. and just gets worse. keep an eye on it, and try to replicate the conditions that bring it on, will help diagnose it.