Lack of high speed power

[forhad1212]

I had my engine management light on , took it to a local garage and they couldn't find the issue , said they will have to look into my DPF filter . I took it to halfords for a DPF cleaning and they couldn't complete regen saying it is too much clogged up and DPF needs replacing. Called a mobile DPF cleaning mechanic , he confirmed DPF filters is fine ash is 0 , soot 6g. He didn't do the cleaning saying it will not work. ( I had my DPF differential pressure sensor changes few months back). Mobile mechanic said exhaust back pressure sensor reading is too high - 15.49 PSI and fill level is 49% when idle. and Exhaust back pressure sensor is responsible and needs changing. Can someone please have a look into the data and advise me. Not sure who to trust. Forgot to mention "Halfords reset my fault code even though they couldn't fix the issue)

 

[forhad1212]

Correction : Lack of high speed power .

 

[alexanderfoti]

15 psi is too high at idle but how are we to know if its the sensor, blocked hose or any other combination from only a picture of the live data?

It needs driving around whilst logging the data to see if the values are realistic VS the DPF differential pressure sensor.

 

[forhad1212]

15 psi is too high at idle but how are we to know if its the sensor, blocked hose or any other combination from only a picture of the live data?

It needs driving around whilst logging the data to see if the values are realistic VS the DPF differential pressure sensor.

Thank you , my biggest concern if the DPF filter needs replacing as advised by Halfords , I will take it to a garage for proper diagnostics.Halfords said my dpf is too much clogged and definitely needs replacing and called me today with the quote.

 

[alexanderfoti]

Fairly low mileage for needing one. We often have good results cleaning them manually, but I suspect with a clean yours will be fine!

 

[alexanderfoti]

Also, find a good indy and stop with Halfords, all they will do is waste your time. A good merc garage will sort it all in one go without back and forth.

 

[mioba]

Mobile mechanic - bin
Halfords - bin
Regular mechanic - bin

Reputable mercedes independent - life saver.