Black smoke and starting difficulties with the 2021 Peugeot 3008 Diesel: suspected defective fuel filter heater

Hey, I had a similar problem with my 2018 Peugeot 5008 diesel. My engine showed the same symptoms. Black smoke was coming out of the exhaust, the check engine light was on and it was having trouble starting. The mechanic noticed that the wiring harness/plug for the fuel filter heater was damaged. This was a serious issue because if the fuel filter can't work properly, the engine won't get the clean fuel it needs. The repair involved replacing the wiring harness and connector, and making sure the fuel filter heater was working properly again. All in all, it wasn't a quick fix, but afterwards my car ran like new again. Hope this helps you. Have a good trip!

(Translated from German)

Hey, thanks for your reply. Seems like we went through pretty much the same thing. Can you remember how much this repair cost you? And has anything similar or even the same problem occurred again since then? I'd be interested to know if your Peugeot has been running stable since then. Cheers!

(Translated from German)

Hey, no problem, I'm glad to hear that my experience can help you. It cost me around €110 to repair my wiring harness and connector for the fuel filter heater. It was a lot of money at first, but it was worth it. Since I went to the mechanic, the defect in the fuel filter heater has been rectified and I've had no more similar problems. My Peugeot has been running really smoothly since then. I hope it runs as well for you now that you've had it fixed. Cheers!

(Translated from German)

Thanks for the info, really helpful! So I'm going to get my Peugeot 3008 repaired as soon as possible. The €110 sounds a bit steep at first, but if it gets the car running again, it's worth it. I now feel a bit better prepared for the visit to the mechanic. Wish me luck! See you then!

(Translated from German)