GrandVoyager DPF Failure Causing Power Loss & Smoke

Had the same issue on my 2007 Chrysler 300C diesel. The reduced power and dark smoke typically indicate serious DPF issues combined with a faulty exhaust back pressure sensor. The sensor malfunction prevents proper DPF regeneration cycles, causing soot buildup in the diesel exhaust system. The repair required: Complete diagnostic of the exhaust system, Replacement of the defective pressure sensor, Forced DPF regeneration cycle, Cleaning of the exhaust gas recirculation valve This was not a quick fix, the car stayed at the workshop for 3 days to ensure all system checks were completed properly. The low mileage on your GrandVoyager suggests the issue could be from frequent short trips preventing natural DPF regeneration cycles. Recommend: 1. Getting a full exhaust system diagnostic 2. Having the pressure sensor replaced if readings are consistently low 3. Completing a proper DPF regeneration cycle 4. Avoiding short trips after repair to maintain DPF health This is a serious issue that needs proper attention. Continuing to drive with these symptoms risks further damage to the diesel engine and complete DPF failure.

Thanks for sharing your experience with the 300C. That matches what I noticed with my GrandVoyager perfectly. The mechanics eventually fixed mine with similar steps, especially the sensor replacement and particulate filter cleaning. Can I ask how much you ended up paying for the full repair? Also curious if the problem ever came back after they fixed it? My particulate filter has been running fine since the work was done, but I keep watching the emission control system readings just to be safe.

After my earlier repairs on the 300C, I can confirm the diesel exhaust system has worked perfectly for over a year now. The faulty exhaust back pressure sensor was the main culprit, costing 245€ to replace. The DPF regeneration process has been functioning normally since fixing that component. The emission control system readings have stayed stable, with no reduced power episodes or dark smoke issues recurring. The particulate filter maintains proper pressure levels during regular operation. I still monitor the sensor values occasionally through my OBD reader, but mainly out of habit rather than concern now. To maintain optimal DPF performance, I make sure to take regular longer drives that allow complete regeneration cycles. This preventive approach helps avoid future diesel exhaust system complications. The initial investment in proper repairs definitely proved worthwhile compared to risking more extensive engine damage.

Thanks everyone for the helpful insights. After getting my GrandVoyager fixed last week, I wanted to share how it went. Found a specialized diesel workshop that properly diagnosed the issue. The total repair came to 780€, which included replacing the pressure sensor, cleaning the particulate filter, and running multiple DPF regeneration cycles. The reduced power problems disappeared completely after the repair. The dark smoke from the diesel exhaust is gone too. Been taking the car on longer drives as suggested, and the emission control system is working perfectly now. The mechanic showed me the before and after readings, the difference in exhaust back pressure is remarkable. Really glad I decided to get it done properly instead of trying cheaper temporary fixes. The new workshop did a thorough job testing everything afterward, which gave me confidence in the repair. Going to keep monitoring the DPF readings, but so far everything is running smoothly.