Hildewag
Searching for solutions to exhaust back pressure sensor fault in Mercedes Vito Diesel 2021
(Translated from German)
Summary of the thread
A 2021 Mercedes Vito Diesel is experiencing engine light activation, reduced engine power, and failed DPF regeneration, possibly due to a faulty exhaust back pressure sensor. A similar issue in a 2019 model was resolved by diagnosing a severely overloaded DPF, which required cleaning and replacement. The suggested solution is to take the vehicle to a garage for a thorough diagnostic check to confirm the problem and avoid merely clearing fault codes, as this could lead to recurring issues.
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4 comment(s)
Hildewag (community.author)
Hello, thank you for your quick reply. It's always good to have first hand experience. From your description, it sounds like I have similar problems with my DPF. The last service was at 73762 kilometers, but I will probably have to go back to the workshop. I'll keep you posted as soon as I know more. But thanks for the tip, I'll keep that in mind.
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BenSpeedy
No problem, you're welcome! Your case definitely reminds me of my own experience. Would also recommend you take the Mercedes to the garage as soon as possible. It could really be that the DPF is totally clogged and needs to be replaced. But make sure the garage doesn't just clear the fault codes and send you away, because the problem could recur. Replacing the DPF can be expensive, as was the case for me. I wish you the best of luck and hope it's nothing serious. Please keep us up to date!
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Hildewag (community.author)
Thanks for the support! I will follow your advice and make sure that the workshop doesn't just delete the error codes. That certainly wouldn't be the best solution. I plan to take the car in tomorrow morning and we'll see. I will definitely keep you posted. Thanks again for the help and useful tips. Have a nice evening!
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MERCEDES
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VIANOVITO
BenSpeedy
Hello, I once had a similar problem with my Mercedes Vito Diesel, built in 2019. I have a bit of experience with cars and am good at working on cars. When I had the problem, I contacted my garage directly. They used a diagnostic tool to read out the fault and found that the DPF was severely overloaded. It turned out that it was necessary to completely clean and replace the DPF, which cost me around 1325 euros. In order to be able to help you more precisely, it would be helpful if you could provide more information about your car, for example exactly what faults are in the memory. Perhaps someone else here has other tips.
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