[i30srb]

Hello, fellow i30 owners,

After a long time lurking, I decided to share my issue with you guys.
I saw quite a few topics on this forum, discussing oil level rise and failed DPF regenerations. Unfortunately, the same has happened to me. I noticed that the oil level in my car has had risen quite a lot. And it had a very liquid texture. I went to the official Hyundai service, where they told me that my DPF is in bad condition and that they will try with the forced regeneration. As they also told me, the soot level was 20 of something, which they wouldn't specify. It fell to 9 after the forced regeneration. We agreed that I should come back next week, for an oil change. In the meantime, I should observe if the oil level will rise again.
A week and some 1000km later, I went to the Hyundai service again. The oil level was good. So we concluded that DPF is fine now. Also, my average fuel consumption went from 6.8 to 5.4 liters per 100km.
Not long after that, maybe several hundred kilometers, I noticed oil levels had risen again. I phoned the Hyundai service, and the guy told me that the only solution now would be to disable the DPF. I asked him if we should maybe check the DPF sensors, EGR valve, injectors? And he assured me that that won't help and that the only solution is to drill a hole in the DPF and disable it.
Well, that was quite the opposite of what I read here. I mean, disabling the DPF won't solve the cause of the problem.
So, now I have scheduled injectors diagnostics in the official Bosch service. After that, I plan on doing DPF cleaning (the one where they take it off of the car). The general idea is to have everything checked, and find the root of this issue.
Also, I bought an OBD2 dongle, just so that I can check the DPF and soot level by myself. But, I couldn't get any readings. Tried with both Torque PRO and Car Scanner apps. Did anybody manage to get these values by themself? Is there anything I am doing wrong?

Thank you all for reading!

[sundiz]

Cheap dongles do not support all features in every car. To get access to all dpf values you will probably need higher end generic reader, or cheaper brand specific one.

[i30srb]

Hey, thanks for reading and answering.

Well, i am using cheap dongle. But not THE cheapest. I am using Vgate Icar Pro. But still, I hope somebody managed to get readings with these cheap dongles?

Forget to mention, in most of the apps I used, I got something like EGR and/or VVT Monitor drive cycle not ready, or something like that. So I thought, is it maybe needed to warm up the car before I read DPF status? Just drive it around a bit? I guess I can't just plug the dongle, and expect to get readings from a cold machine?

[Marioux]

Hello,

I have the same issue with my 1,4 model. If you found a solution to the oil rise let us know but after all my research and assuming there is not mechanical issue with any part, it's pretty much how this specific model behaves. If you complete most of the regen cycles successfully (all the them would be ideal) , the contamination will not be very drastic. Just a little bit above the max lol. After keeping a close eye on my regen recycles and doing them when they start, the oil dilution has reduced dramatically. Oil now maintains it's viscosity over a longer period of time . Now, regarding the dongle, I recently came across this channel (it's a Korean guy that sells this device. He says that once plugged, it notifies the driver when a regen starts alongside with some other interesting stats and most importantly the level of soot in real time  This would actually be very helpful I think. Knowing this, any driver could plan a longer journey and include the regen. Everybody know these regens tend to start in the most unexpected times. I think I will buy his product next month (I had some positive feedback from a Portuguese client of his with his car). Said it works perfectly.

Here it is (I hope by posting this I'm not breaking any forum rules)

The product

DAG3+ OBD2 Diesel Gauge DPF Soot Monitor Pick up Truck Diagnostic Scanner | eBay

codesystemglobal on eBay

All the details one needs are there.

The YouTube channel (you will find valuable information on all his videos including detailed information regarding DPF regen related stuff)

DAGgauge - YouTube

P.S -> It's not cheap 

[i30srb]

Marioux, thank you for your answer.

So, here is the update on my issue.
I took the injectors to official Bosch service for diagnostics. They were all working fine, nothing wrong with them.
Next, I removed DPF. The inside looked very clean to me (check the photo bellow), but i sent it to cleaning anyway.



DPF cleaning service confirmed that my DPF wasn't clogged.

Although happy that my injectors and DPF are in good condition, I was confused what was causing my oil level issues.
Next in line to check would be the differential pressure sensor. I ordered the new one, and once I change it I will update you guys if that solved my problem.

[Marioux]

hey @i30srb

Thanks for you feedback. Glad to know both DPF and injectors are fine. I can only assume mine are too. On top of that assumption, I have replaced the sensor you are talkin about with another one.Same OEM quality as previous.Denso. Issue still persists 

[ideal09]

As we assumed in the past, there is an ecu problem, like i20 model. But hyundai, compare to i20 she didn't give a software update for our cars. I have the same issue. Every part in my car is in perfect condition with totally clean dpf, but it starts every 50km a regenaration. As a result a have increased consumption and my oil mark at least 1cm above the mark F.

[i30srb]

So the solution would be to sell it, and get another car. 

[Marioux]

Well shit. Guess somehow I feel more at ease finding out that more of us have the same particular issue with this model. I'm ok with that. I will not sell it nor I will remove the DPF unless it gets clogged. Out of a ~ 40 k km mileage so far, I got a 6 l general average consumption. I'm ok with that.

I have a question for you guys : have you managed to pull any DPF related stats from the car's OBD using whatever testers ? Right now I'm testing a korean device that states that it can show me in real time how much soot (in percentage) the DPF has accumulated. That off course would help plan a longer drive to coincide it the next DPF regen. Eliminate the "suprise". This would be pretty helpful if it would be true. I've spent almost 200 euros for it but so far I get all kinds of stats but absolutely no DPF related stats  I'm starting to think this particular engine doesn't have the proper sensors for these kind of stats 

[Psalcedas]

Hi there!
I was the portuguese guy who told you about that Korean device.
And as i told you, when i received the device it didn´t work but after a few software arrangements, by the korean guy who sold me the device, it worked and now i can control all the regenerations happening in the DPF, i know when they start, when they finish , ( they take about 20 minutes) and they start when soot level reaches 16 grs (usually). with this control,  oil rising is also controled.
My car is a I30 1.6 CRDI from 2018, the device works in several models but it has to be adjusted in terms of software to your car. 

[Psalcedas]

This morning i went out of my garage, driving my I30 with the device connected to obd door, marking 14,7 grs of soot,
Than i drove por around 20 minutes in the highway and.... regeneration done! Nice and easy

[Marioux]

Hi there!
I was the portuguese guy who told you about that Korean device.
And as i told you, when i received the device it didn´t work but after a few software arrangements, by the korean guy who sold me the device, it worked and now i can control all the regenerations happening in the DPF, i know when they start, when they finish , ( they take about 20 minutes) and they start when soot level reaches 16 grs (usually). with this control,  oil rising is also controled.
My car is a I30 1.6 CRDI from 2018, the device works in several models but it has to be adjusted in terms of software to your car. 

Hi man,

Thank you for reaching out on the subject.
Yeah, I bought the device but sadly it doesn't detect the DPF related information. On the 1,4 model (2014) (that's the second generation of i30) the device doesn't seem to work. They've sent me 3 different firmware. Flashed them, tried all those options and variations but i still get "No signal" on the device.
I get all the other sensors information BUT no info regarding DPF related stats. It cost me 180 dollars

The guys were pretty nice though, they said I can return the item to them but imagine that I still have it hoping that maybe they will somehow in the future find a way to make it work for my car too. So I have it at home I'm waiting for a miracle lol

I don't know the culprit might be. The car's ECU ? Maybe my model doesn't have the proper support for DPF stats. I don't know. I've offered my support to them in hope they might find a solution but they've said they have run out of options.

Here's a Youtube video of the issue.

DAG 3+ operation - YouTube

On the other hand, the device works properly on a IX35 (second generation)

[Marioux]

Marioux, thank you for your answer.

So, here is the update on my issue.
I took the injectors to official Bosch service for diagnostics. They were all working fine, nothing wrong with them.
Next, I removed DPF. The inside looked very clean to me (check the photo bellow), but i sent it to cleaning anyway.



DPF cleaning service confirmed that my DPF wasn't clogged.

Although happy that my injectors and DPF are in good condition, I was confused what was causing my oil level issues.
Next in line to check would be the differential pressure sensor. I ordered the new one, and once I change it I will update you guys if that solved my problem.

I've also removed all 4 injectors from the car for an inspection and the injectors are working as they should. Mine are Delphi.

[Psalcedas]

Hi there!
I was the portuguese guy who told you about that Korean device.
And as i told you, when i received the device it didn´t work but after a few software arrangements, by the korean guy who sold me the device, it worked and now i can control all the regenerations happening in the DPF, i know when they start, when they finish , ( they take about 20 minutes) and they start when soot level reaches 16 grs (usually). with this control,  oil rising is also controled.
My car is a I30 1.6 CRDI from 2018, the device works in several models but it has to be adjusted in terms of software to your car. 

Hi man,

Thank you for reaching out on the subject.
Yeah, I bought the device but sadly it doesn't detect the DPF related information. On the 1,4 model (2014) (that's the second generation of i30) the device doesn't seem to work. They've sent me 3 different firmware. Flashed them, tried all those options and variations but i still get "No signal" on the device.
I get all the other sensors information BUT no info regarding DPF related stats. It cost me 180 dollars

The guys were pretty nice though, they said I can return the item to them but imagine that I still have it hoping that maybe they will somehow in the future find a way to make it work for my car too. So I have it at home I'm waiting for a miracle lol

I don't know the culprit might be. The car's ECU ? Maybe my model doesn't have the proper support for DPF stats. I don't know. I've offered my support to them in hope they might find a solution but they've said they have run out of options.

Here's a Youtube video of the issue.

DAG 3+ operation - YouTube

On the other hand, the device works properly on a IX35 (second generation)

Hi man,

Sorry to hear that, i paid around 160,00 € for the device.

Car scanner pro it´s also a tool that works on my car, but this daggauge is simple and effective.