Problem with X5 40d

[MutanX]

We just acquired our 2011 X5 40d M Sport only two days ago, and we have noticed that there is an intermittent engine light that appears and disappears. There seems to be an air/vacuum leak during acceleration, resulting in a little decrease in power. The pipe seems to be the source of the problem. Do you have any suggestions as to its identity or if it should be connected?

[Grundysp]

The exhaust pressure sensor pipe is the component where the rubber pipe should be attached. The sensor itself is a square object with three screws, and it seems to have melted at the location where the rubber pipe should be connected.
I believe the DPF is obstructed, resulting in elevated exhaust pressure and the expulsion of excessive hot gas via the rubber hose.

[MutanX]

Could the replacement of the swirl valves have also caused the issue?

[Grundysp]

No, they are not connected to that job unless the problem with the flaps, which were not completed, caused the regeneration process to cease and resulted in the clogging of the DPF.

[MutanX]

It is possible that the cessation of the regeneration process caused an increase in pressure, leading to the sensor being melted.

[Grundysp]

In order to address this problem, it is necessary to resolve the issue that is preventing regeneration. Once the issue is resolved and any errors are cleared, it is advisable to drive the vehicle at a consistent speed of 60-70 mph to determine whether regeneration will occur.

[Dudeta]

Did you make your purchase from a dealership or an individual seller?
If the dealer accepts the return.