W204 c220cdi Dpf force regen not working

[Rimmer100]

Hi,

Hopefully somebody can help.
Basically I have a carsoft mb2, my dpf is full.
When I try and do a regen from the scanner the exhaust temp never goes above 200, and the revs never increase as you would expect with a regen.
The car is at temperature as each time I have tried I take the car for a 30 mile round trip to warm it up, it has a full tank of diesel each time.

Any thoughts or suggestions would be great.

Cheers

 

[markjay]

Welcome.

1. Any fault codes (other than that the DPF is full)?

2. Is the iCarsoft software up-to-date?

3. Plan B might be to take the car to a specialist with genuine STAR to try the forced regen.

4. The DPF may need to be removed and physically cleaned, or replaced.

5. You'll probably get some advice on here to gut the DPF or remove it completely, word to the wise: I suggest that you research this course-of-action thoroughly before consideration it.

 

[m80]

Hi,

Hopefully somebody can help.
Basically I have a carsoft mb2, my dpf is full.
When I try and do a regen from the scanner the exhaust temp never goes above 200, and the revs never increase as you would expect with a regen.
The car is at temperature as each time I have tried I take the car for a 30 mile round trip to warm it up, it has a full tank of diesel each time.

Any thoughts or suggestions would be great.

Cheers

These can fill with ash, and will with enough miles.
As said various faults inhibit a regen. Imo iCarsoft should see most though.

Afterthought.
You're likely, but not essentially, to have 2 exhaust temp sensors.
The Cat sensor should see higher temps than the DPF sensor, until regen then it quickly reverses.
Even the DPF sensor should easily see more than 200 C if monitoring live. A good boot with right foot and mine will approach 500 with ease.

'I think' the ECU would see an implausible situation if the Cat wasn't higher pre regen.

 

[Rimmer100]

Welcome.

1. Any fault codes (other than that the DPF is full)?

2. Is the iCarsoft software up-to-date?

3. Plan B might be to take the car to a specialist with genuine STAR to try the forced regen.

4. The DPF may need to be removed and physically cleaned, or replaced.

5. You'll probably get some advice on here to gut the DPF or remove it completely, word to the wise: I suggest that you research this course-of-action thoroughly before consideration it.

1. Just the dpf full.
2. I'll double check only got it a few weeks ago.
3.
4. Possibly
5. I have been looking in to this since getting the car a year ago... Well getting a performance remap.

Further to my original post, it's been in to two different garages for dpf full... Neither of those found any reason for it to fill like it does.
One been a dpf Dr, they had the car a full day trying to work out why it filled up. I do long runs, use premium diesel...

Hence why I got the icarsoft, asni have a suspicion there was something a.miss.

 

[mersum1es]

DPF pressure difference reading ok, changing on revs? Sensor changed and connections cleared?

Even SDS won't do forced regen if fill load is over 400%. Carsoft is not showing same units in parameters so can't comment on that further.

 

[pcthrillrider]

mine was a blocked pipe leading to the pressure sensor