BMW 2 DPF Warning: Black Smoke & Power Loss Issues

Hey there! I had a similar issue with my 2021 BMW 3 Series diesel last year (I have some basic car maintenance experience). Those symptoms sound exactly like what I dealt with, DPF light, sluggish performance, and black smoke. My local workshop confirmed it was a faulty DPF and had to replace the whole unit. The repair took about two days, and I ended up paying around 1,550 Euro. Since then, the car's been running perfectly. For what it's worth, before the complete failure, I tried a forced regeneration, but it didn't solve the problem. The mechanic explained the filter was too clogged and damaged to be saved. What's your current mileage? Also, do you do mostly short trips or highway driving? This info could help determine if it's definitely the DPF or maybe something else. Let me know and I can share more details about my experience.

Thanks for the input! My BMW's at 137741 KM and just had its service last month. I mostly do short trips, which probably didn't help the DPF situation. I'll look into getting it checked by a workshop, but that cost you mentioned is pretty steep, hoping mine might be salvageable with a regeneration cycle. Did your mechanic mention any preventive measures to avoid this happening again? I'd rather not face another hefty repair bill if I can help it.

Hey again! Yeah, those short trips are definitely not doing your DPF any favors, learned that the hard way myself! After my repair, my mechanic gave me some solid advice that's been working great. He recommended taking the car for a good 20-30 minute highway run at least once a week to help with regeneration. I've been doing this religiously since the repair, and it's made a huge difference. About the regeneration cycle, I really hope it works for you, but just be prepared that it might not. In my case, I tried that route first to save money, but the filter was too far gone. The mechanic said if we'd caught it earlier, regeneration might have worked. The warning signs started a few months before I actually did anything about it (my bad!). One other tip my mechanic shared: avoid turning off the engine during an active regeneration cycle (you can tell it's happening when the idle is slightly higher and there's a slight burning smell). Since following these guidelines, I haven't had any DPF issues for the past year. Let me know how the regeneration goes, fingers crossed it works out cheaper for you than my repair did!

Thanks so much for those helpful tips! You're right about catching these issues early, wish I'd known about the weekly highway runs before. Just called a workshop and they can check it out tomorrow morning. They mentioned they'll try the regeneration first and said it might cost about 200-300 Euro just for that attempt. If that doesn't work, looks like I'll be facing that bigger bill you mentioned. Really appreciate the heads-up about not turning off during regeneration, definitely wouldn't have known that otherwise! At least now I know what to watch out for in the future. I'll start doing those longer drives once this is sorted. Actually thinking about changing my route to work to include more highway driving, just to help prevent this from happening again. I'll update the thread once I know what's what with my car. Thanks again for all the detailed info, it's super helpful having someone who's been through the same thing!

Hello, I have the error code 244800, even though I only got a new DPF about 5,000km ago. According to the error log, the error has existed pretty much exactly since the replacement. What could be the reason?

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The error code 244800 typically indicates an issue with the DPF system, possibly related to the differential pressure sensor or a faulty installation. Since the problem started right after the DPF replacement, it's worth checking if the sensor connections are secure and if the sensor itself is functioning correctly. Also, ensure there are no leaks or blockages in the exhaust system. If you're not comfortable inspecting these yourself, I recommend having a mechanic take a look to ensure everything was installed properly. Let me know how it goes or if you have any further questions!

Hello, see if you don't have a problem with the glow plugs and/or the glow plug housing, the EGR valve, the soot level, etc.! If the DPF regeneration has failed, a problem may be present in the OBD and no automatic regeneration will take place! Initiate a forced regeneration with Carly if possible? Otherwise, it will need to be assisted by a cleaning product such as Xenum DPF Cleaner or Wynn's and other brands!

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It's a good idea to check the glow plugs and EGR valve, as they can affect the DPF regeneration process. If the soot level is too high, a forced regeneration might be necessary. You can try using a DPF cleaning product as a temporary measure, but if the problem persists, it's best to have a professional mechanic inspect the system to prevent further issues. Let me know if you need more guidance or have any questions!

Hi. 2007 530D. Replaced DPF, but the warning comes back after about 10 minutes. Seems to be time-based. Soot and ash values are the same as on the replaced one. Does the system need to be told that the DPF has been replaced? It seems to be something calculated based on mileage. Differential pressure across the new filter is ok. Regards, Börje

Yes, after replacing the DPF, the system often needs to be reset to recognize the new filter. This involves resetting the DPF adaptation values using a diagnostic tool. If this step is skipped, the car's ECU might still think the old, clogged DPF is installed, triggering the warning light. I recommend visiting a mechanic or using a suitable diagnostic tool to perform this reset. Let me know if you have any further questions!