Cayman DPF Issues: Power Loss & Failed Regeneration Help

Hey there! I've dealt with something very similar on my 2014 Porsche Boxster. I've got some experience working on cars, but I usually leave the complex stuff to the pros. Had almost identical symptoms, engine light, sluggish performance, and DPF issues. Took it to my trusted Porsche specialist, and it turned out the DPF was completely clogged. They had to replace it, and it set me back about 1,325€. Not cheap, but it solved the problem completely. Before I share more specific details about my experience, what's your current mileage, and have you noticed any other symptoms? Also, how's your driving pattern, mostly city or highway? This could help determine if you're facing the same issue.

Thanks for sharing your experience! I'm at 24402 KM and just had my latest service. My driving pattern is mostly city with weekend highway runs. That's interesting about the DPF, honestly was hoping it wouldn't be that expensive. Did your specialist mention any preventive measures to avoid this happening again? I'm trying to keep costs down if possible, but also want to make sure I'm not causing more damage by waiting too long.

Hey again! Thanks for the follow-up. Yeah, I totally get wanting to avoid another expensive repair, I was in the same boat! Actually, my specialist gave me some really useful tips after my DPF replacement that have helped a lot. The main thing is that these cars really need a good highway run at least once a week, like 20-30 minutes at steady higher speeds (around 70mph/110kmh). I've made it a habit to do this on Sunday mornings when traffic is light. This helps the DPF complete its regeneration cycle properly. Your mileage is pretty similar to what mine was when I had the issue (I was at about 26000 KM). With your driving pattern being mostly city, that's likely contributing to the problem, it was the same situation that got me into trouble with mine. One thing my mechanic suggested, which has worked great for me, is using a higher grade diesel fuel and making sure I don't let the tank get too low. Also, avoiding too many short trips where the engine doesn't get fully warm helps a lot. Since implementing these changes, I haven't had any DPF issues in the last 18 months. It's a bit of a pain having to plan for regular highway runs, but it's way better than facing another expensive repair!

Thanks so much for all this detailed advice! It's really helpful to hear from someone who's been through it and found a solution. I'll definitely start doing those weekly highway runs, luckily, I've got a nice route I can take on Sunday mornings too. I had no idea the fuel grade could make such a difference, but it makes sense. I'll switch to premium diesel and keep the tank fuller from now on. Guess I'll have to bite the bullet and get it checked out by a specialist soon, but at least now I know what to expect cost-wise and how to prevent future issues. Really appreciate you taking the time to share your experience and tips. It's made me feel a lot more confident about handling this situation. Time to schedule that mechanic visit and start planning some weekend highway drives!