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Black smoke and engine problems with Citroen C5 Diesel 2015: experience and advice wanted

Hi guys, I'm quite worried about my 2015 Citroen C5 diesel with 74631 KM mileage. It is affected by black smoke from the exhaust when accelerating, the engine warning light that is constantly on, loss of engine power and it smells quite strongly of exhaust. The DPF regeneration also fails. I think this is due to the diesel particulate filter being full. I had a pretty bad experience with the garage last time, so I wanted to get your opinions and experiences beforehand. Have any of you ever had similar problems with your car? And what are your experiences with garages in such cases? It would be cool if you could give me a few tips. Thanks in advance!

(Translated from German)

4 comment(s)

Hey, I had a similar problem with my 2012 Citroen C3 diesel. After long journeys and frequent acceleration, my diesel particulate filter was also defective. It's definitely a serious issue that you shouldn't ignore. My experience was that the mechanics were able to identify and fix the problem relatively quickly. It turned out that in my case, the ECU (Engine Control Unit) had to be reprogrammed to regenerate the filter. It was necessary because the system could not understand that the filter was overloaded and therefore did not switch to regeneration mode. What you should also look out for is whether the black smoke from the exhaust is still there after the diesel particulate filter has been repaired. If so, then it could be another sign of a serious problem. Hope that helps you out, buddy! But always remember, it's best to get a professional opinion. Go to a garage you trust and have them take a look.

(Translated from German)

Hi, thanks for sharing your experience with me. That's really useful. Do you happen to remember how much this repair work cost you? And have you had any other problems with the car since then, or was everything fine after the diesel particulate filter and ECU were reprogrammed? I'm really worried.

(Translated from German)

Hey, no problem, sharing my experience is the least I can do. So, for the repair of the diesel particulate due to high mileage, I was actually on the hook for €1550. That's a lot of money, but what can you do when your car's a mess? And the good news is that since the mechanic fixed the diesel particulate filter - "heavily loaded", as he called it - the car has been running like clockwork again. It really feels like everything is back to normal. No black smoke, no loss of engine power, and the engine warning light hasn't come back on either. So don't worry too much. It's a bit expensive, but in the end it's worth it when your car is running smoothly again!

(Translated from German)

Oh dear, that does sound expensive, but I agree, there's not much you can do if the car doesn't work. And if it runs again afterwards, then it's worth the money. I really thank you for your help and for sharing your experience with me. I'm reassured to hear that your car didn't have any further problems afterwards. Now I guess I'll have to find a good garage that I can trust. Wish me luck!

(Translated from German)

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