Differential Pressure Readings of Diesel Particulate Filters (DPFs)

[Isabella_Martin2002]

I have installed the replacement sensor; nonetheless, the indicator light remains illuminated. The rationale for our decision to use the sensor was prompted by the occurrence of a diagnostic failure, whereby the vehicle's system indicated an excessive accumulation of soot. The car was seen to have a reported increase of 186%.
An attempt was made to initiate a forced regeneration process, which required the vehicle to be in motion. It was seen that the soot levels decreased to 120%, however, the diagnostic system encountered a failure. Upon each subsequent attempt, the system consistently displayed a value of 186% before encountering a failure. It was determined that the sensor's reported data was inaccurate. The unexpected failure of the diagnostic may be attributed to the sensor's subscription being expired by a few days.

In any case, the vehicle had a loss of illumination and through four instances of attempted regeneration. Subsequently, the vehicle was transported to its place of residence, where it traveled a distance exceeding 200 miles prior to the reoccurrence of the aforementioned illumination issue on Saturday afternoon. The only course of action available to me is to initiate a reset and observe the subsequent outcomes. The battery was disconnected for a duration of 10 minutes; nevertheless, this action did not result in the desired resolution.

[George2001]

Can a malfunctioning diesel particulate filter (DPF) sensor result in reduced turbocharger boost?

[vendimoto55]

The engine experiences a loss in power.

The Icarsoft's tolerance range for the DPF sensor is ±0.03. The concept of zero is considered to be perfect.

Elevated amounts of soot, reaching up to 400%, sometimes lead individuals to infer that the diesel particulate filter (DPF) is malfunctioning.

It is advisable to detach the two pipes connected to the sensor and subject them to a compressed air blow to ascertain the absence of any obstructions.

[vendimoto55]

After the replacement of the sensor, the icarsoft diagnostic tool is used to access the diesel particulate filter (DPF) regeneration area. Within this section, the unit initiates a sequence of modifications. The pressure sensor will be integrated into the system, and the ECU will store the newly acquired data. Failure to complete this step may result in the Engine Control Unit (ECU) incorrectly recognizing the presence of the previous sensor, hence potentially impeding the ability to successfully clear error codes.

[Lucas_Smith97]

According to OneForTheRoad's statement, it is possible for the two rubber pipes connected to the sensor to develop concealed splits that can only be identified by flexing the pipe and revealing the presence of the split. This phenomenon has the potential to generate comparable failure codes to those produced by the defective sensor.

[Lucas_Smith97]

As stated before, the error codes persisted even after the installation of the replacement sensor. I refrained from entering the diesel particulate filter regeneration area. Yesterday, I performed the action of erasing the fault codes. Subsequently, I proceeded to drive a distance of 50 miles, during which neither the fault codes nor the Engine Malfunction Indicator Lamp (EML) reappeared. Here are the most recent readings, which are assumed to represent accurate working numbers.

The differential pressure sensor for the diesel particulate filter (DPF) records a pressure reading of 0.01 bar under idle conditions.
The differential pressure sensor of the diesel particulate filter (DPF) records a pressure reading of 0.10 bar while the engine is running at 3000 revolutions per minute (rpm).
The diesel particulate filter (DPF) is now operating at a fill level of 78%.
The particulate matter concentration inside the diesel particulate filter (DPF) is measured to be 5 grams.
The ash content of the diesel particulate filter (DPF) is 1 gram.
The total distance recorded at the most recent revision of ash content amounts to 61,694 kilometers.

[James_Cam00]

Greetings, I am in need of assistance. Is this the location of the diesel particulate filter (DPF) sensor? The subject matter pertains to a 2019 model of the Mercedes-Benz CLA. The diesel particulate filter (DPF) need cleaning as a result of frequent short excursions, and there is a desire to avoid the inadvertent removal of incorrect pipes.

[Lucas_Smith97]

Greetings. Unfortunately, I am unable to verify the accuracy of the information at this time since my wife now has possession of our vehicle. However, based on my visual assessment, it seems to be correct. The provided image depicts the diesel particulate filter (DPF) sensor, positioned subsequent to the detachment of the bracket that secures the sensor, along with the presence of two connecting pipes. It is advisable to use caution while attempting to detach the pipes from the sensor, since the plastic tubes affixed to the sensor are delicate and prone to breakage, as I discovered via personal experience.