icarsoft DPF regeneration issue

[givesmethebenz]

Hi All,

I have a 220CDI 2010 manual. I've had a DPF sensor issue. Fault code P245400 The input differential pressure sensor 1 has short circuit. I replaced the sensor. Checked everything else and no issues. I've tried to do a regeneration with a icarsoft mb v 2.0 but it will not do it saying change the DPF and check for software release of control unit N3/9(CDI control unit) and update if necessary.
I'm using a newly updated icarsoft.
Can anyone tell me how I update the software for the CDI or is this a red herring and its something else?

 

[Tony Dyson]

I think the check and update software message would need star/xentry to complete, I E Mailed iCarsoft about a manual regen some time ago and they informed me there had to be a current DPF error message live on the instrument in order to initiate the regen so my first question is have you reset and cleared the error codes on your instrument? Secondly, why do you want to initiate a manual regen? have you read the fill level of your DPF in live Data, if so how full was it? Oh and welcome to the forum!

 

[Gazwould]

Yes it's new dpf pressure sensor and recalibrate with Star Xentry software update as there can be several revisions of the sensor .

 

[JBell]

Yes it's new dpf pressure sensor and recalibrate with Star Xentry software update as there can be several revisions of the sensor .

They also have to be coded to the car, just had mine done then out for a drive and the DPF automatically regenerated itself

 

[Gazwould]

Yes, I'll use both terms next time .

These pesky sensors and Star time have been a nice little earner for Mercedes and an inconvenience to us .

 

[givesmethebenz]

Hi, Thank you for the replies. I suppose it is a welcome or more welcome back as I sold my last Merc in 2015 and for some unknown reason decided to buy another.
DPF fill level 186% Soot content (kg) 13. I believed you had to clear the error messages for the car to regen. If it flags an error in the next few days I'll give it another go. if it does throw another error and it still won't regen I'll save time faffing about I'll book the thing into mercedes for them to take some money off me. I'll update this post accordingly but thank for the replies.

 

[Tony Dyson]

Hi, Thank you for the replies. I suppose it is a welcome or more welcome back as I sold my last Merc in 2015 and for some unknown reason decided to buy another.
DPF fill level 186% Soot content (kg) 13. I believed you had to clear the error messages for the car to regen. If it flags an error in the next few days I'll give it another go. if it does throw another error and it still won't regen I'll save time faffing about I'll book the thing into mercedes for them to take some money off me. I'll update this post accordingly but thank for the replies.

There are about IIRC 13 parameters that will inhibit a regen and the only one I am aware of which is user adjustable is the fuel content in your tank, opinions on the forum vary from half full and upwards, mine has started with as little as a quarter tank, maybe you just need to fill up?

 

[givesmethebenz]

There are about IIRC 13 parameters that will inhibit a regen and the only one I am aware of which is user adjustable is the fuel content in your tank, opinions on the forum vary from half full and upwards, mine has started with as little as a quarter tank, maybe you just need to fill up?

I was trying with a full tank. I've cleared the fault codes. When they pop up again (probably in a couple of days/weeks) I'll try a regen then without clearing the codes and update this post

 

[givesmethebenz]

I think the check and update software message would need star/xentry to complete, I E Mailed iCarsoft about a manual regen some time ago and they informed me there had to be a current DPF error message live on the instrument in order to initiate the regen so my first question is have you reset and cleared the error codes on your instrument? Secondly, why do you want to initiate a manual regen? have you read the fill level of your DPF in live Data, if so how full was it? Oh and welcome to the forum!

 

[givesmethebenz]

These are photos of the scanner readings after I've been running around in 3rd gear for a couple of days. The scanner is saying the same fault P245400 short circuit. The scanner will not perform a regen saying the DPF needs replacing. The content levels look fine to me or am I missing something?

 

[LostKiwi]

Something looks very suspect on the second photo, 3rd line. A temperature reading of -20°C??

 

[Kev555]

As Lost kiwi stated shouldn't be -20. Probably sensor or sensors goosed, wont do a normal regen if Pressure or temp sensors faulty. It might still do a normal regen at 180% soot if all the sensors are working properly as your DPF looks good on other readings. Those in the technical department Please correct me if im wrong in that uptake? I take it you've possibly have the OM651 engine? as ive had DPF issues as well with faulty temp sensor and DPF full of ash. long and short once mine hits 100% soot content(I keep the i980 plugged in all the time to keep an eye on it) I drop her into 4th gear first chance I get at 2000 RPM or above on a 7-10 mile stretch of road and regen happens over 10-15 mins max, even road ends dont stop the process, as soon as I take off again and reach 2k RPM it starts again

 

[Tony Dyson]

Something looks very suspect on the second photo, 3rd line. A temperature reading of -20°C??

^ +1 as above in addition to line 4, I've never seen a negative % on the EGR either -50% ? Soot content in Pic 1 line 2 looks rather high as well at 3.2 kg, that's a lot of soot!

 

[givesmethebenz]

Morning All,
And thank you for your replies to this thread.
Update for: After the last post the EML light still on so I drove around with it on. After a couple of time driving the EML light went out. During the last week I've covered over 350 miles mainly A road apart from a section where i have to sit in traffic (Clifton Bridge Nottingham) This is about 10mins stop/start then when I accelerate the car picks up speed then the turbo stops and I have to carry on the journey with no turbo. On a long run without the stop/start their isn't a problem. So, yesterday I had a Diagnostic done on the car. Codes P0080 Supercharger boost adjustment of turbo & P2263 Turbo/supercharger boost system performance came up. This got us thinking it was a turbo issue. Then we looked at this web page https://cvwmagazine.co.uk/technical/avoid-jumping-to-conclusions/ This still points to a DPF issue. The temp sensor some if you have mentioned (B19/11 upstream sensor) did give us cause for concern as this is supposed to be over 100 degrees. So we took it for a run and performed a regen with Star as my icarsoft MB 2.0 still would not perform a regen. The regen completed successfully. I will be running the car this week for another 300 miles I will update accordingly. Thank you for your help with this.

 

[givesmethebenz]

UPDATE
Hi ALL.
I've been running the car (c220cdi manual 2010) over the last couple of weeks.
In that time I've racked up over 600 miles mainly dual carriageway but also some urban congestion.
I've uploaded some photos of the latest reading from my icarsoft version 2.
Some background. I've completed a full regen on STAR after replacing the DPF sensor after the car went into limp mode and the EML light came on.
Yesterday whilst driving down the A46 the car went into limp mode and the EML light came on so I plugged in and As you can see from the photos the fill level of the DPF is 400%. Ash content 1.59g. Soot content 15.19g.
So I've changed the DPF sensor for a new one and taken the car for a run round the block and now ash & soot content are the same but DPF fill level is zero.
Now the car runs fine. As usual I will update this post again in a couple of weeks when I've done another few hundred miles to see if we have a cure. ( As an aside to this the icarsoft v2 will not allow a full regen when the DPF is this full. I believe it is a safety thing as they know you have to burn off the soot in the filter and if someone is following you as you do a regen on the road they may end up driving in a cloud of smoke behind you. This is unfortunate as the reason people buy these scanners is to do your own diagnostics and repair work.)

 

[LostKiwi]

That engine temperature looks suspect?

 

[Kev555]

Back pressure looks high although it could be within parameters if back pressure screenshot was taken same time a screenshot of DPF at 400%?
Temperature differences at DPF might be ok Lostkiwi as his coolant temp is only 16 degrees (Looks like screenshot just after startup)

 

[givesmethebenz]

The car had just been started up which accounts for the low engine temperature. During tonights drive the turbo stop again. I'm thinking this is more a turbo issue than DPF. Your thoughts please

 

[givesmethebenz]

Hello All.
A quick update for you. The turbo cutting out issue hasn't gone away. So today i have put it another brand new DPF sensor. I still think this is a turbo issue but cannot be sure. As with any intermittant fault its a little bit of guesswork or hopefully someone has had a similar issue and found a cure. Please let me know if you have any guidance with this fault. TIA

 

[LostKiwi]

Turbos don't just cut out. Boost can drop suddenly but that's boost control and very rarely the turbo (if ever).