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WilJungFan

Diesel BMW 3 Series model year 2014: Exhaust back pressure sensor defect and other symptoms

Dear community, I was a little worried about my old 2014 diesel BMW 3 Series with a whole bunch of kilometers (219340 km to be exact). The good old friend has been showing some strange symptoms recently. The thing is, it puffs black smoke out of the exhaust when I accelerate, and the check engine light is permanently on. The engine's performance drops, the engine runs irregularly and the DPF regeneration no longer works properly either. The fuel consumption is also quite high. I assume it has something to do with the exhaust back pressure sensor on the diesel particulate filter. I wanted to ask if anyone has ever had something similar with their car? What experiences have you had with the workshops? I had really bad luck with my garage last time! Thanks in advance for your help! Regards

(Translated from German)

The owner of a 2014 Diesel BMW 3 Series reported issues with the vehicle, including black smoke from the exhaust, a constantly lit check engine light, irregular engine performance, and problems with the Diesel Particulate Filter (DPF) regeneration. The owner suspected the exhaust back pressure sensor on the DPF might be the cause. Another participant, who had experienced similar issues with their BMW 1 Series, confirmed that the problem was resolved after repairing the DPF regeneration and the exhaust back pressure sensor. They advised the BMW 3 Series owner to have the vehicle checked at a garage.

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24 comment(s)

I don't know what it's like at BMW, but at Fiat, change the differential pressure sensor and regenerate the DPF

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Exhaust gas back pressure sensör kompresör error I have dived but always comes Dan particle filter

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Exhaust gas back pressure sensör kompresör error I have dived but always comes Dan particle filter

Hello, then either the cable connection from the exhaust back pressure sensor is defective or the diesel particulate filter is internally defective and must be replaced.

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Mercedes Sprinter 2.2 l diesel, error message, exhaust pressure sensor and temperature sensor at particulate filter bank one replaced. Car runs as it should thanks

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Could clean the particle filters with a gereat and ietz is good again

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For all those who have a particulate filter several times a cleaning of the sistem is useful there are workshops that have such so-called cleaning gereat I do 1 time a year and engine runs unwanfrei

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Hello, I would like to know the cost of repairs by professionals abdelilahelhomairi@gmail.com

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BMW Serie 1 118d (2008) - 245000 kms Frequent problem when you don't do many long journeys (freeway). The particle filter ends up saturated. To trigger regeneration, you need : Hot engine (coolant temperature 90°C) and more than 20 liters of fuel in the tank. From then on, you need to clear the error codes first, then run a regeneration in Carly and drive for at least 30 km on the freeway. To be sure that regeneration is underway, check that the temperature at the FAP outlet exceeds 600°C. I have this fault every 6 months on average. I think I'm going to have to change the back-pressure sensor very soon, and inject a product into the DPFS to dissolve the soot that's built up...

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BMW Serie 1 118d (2008) - 245000 kms Frequent problem when you don't do many long journeys (freeway). The particle filter ends up saturated. To trigger regeneration, you need : Hot engine (coolant temperature 90°C) and more than 20 liters of fuel in the tank. From then on, you need to clear the error codes first, then run a regeneration in Carly and drive for at least 30 km on the freeway. To be sure that regeneration is underway, check that the temperature at the FAP outlet exceeds 600°C. I have this fault every 6 months on average. I think I'm going to have to change the back-pressure sensor very soon, and inject a product into the DPFS to dissolve the soot that's built up...

Hello DrFlaco, Your approach to triggering regeneration seems correct. However, if you're frequently having this issue, it might be worth considering a professional cleaning of the DPF. This could potentially remove more soot and ash than a standard regeneration process, extending the life of your DPF. Also, if you're considering changing the back-pressure sensor, it's a good idea to do so sooner rather than later, as a faulty sensor can lead to incorrect readings and potentially damage the DPF. Please let us know how you get on with this. Do you have any further questions?

First of all, it would be nice if my license would finally be activated and secondly, my BMW is built in 2010 somehow I get no answer from support

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