Dpf issues

[Magiic]

Hi, I’m hoping someone with the same problem as me that has fixed their issue could help. Seat Leon 2.0 tdi 184 128k miles

I noticed a post on this forum about the same issue with multiple people commenting saying they’re having the same issue but no one posted a fix and the post went dead.

My car will start a Dpf regen as soon as I set off from a stand still, completing the regen then turning the car on/off and setting off again, the VAG Dpf app shows 0% soot then jumps to 100% as soon as I start driving again triggering a regen. In order to finish my regens I have to drive for so long then let the car idle finish, if I carry on driving to 90 minutes the dpf light will come on until I turn the car off.

Oil ash showing 60% full. Is the dpf at the end of its life? No sign of reduced power, just constant dpf regens.

 

[DEAN0]

Have you tried a forced regen using VCDS, OBDeleven etc ?

 

[Magiic]

Have you tried a forced regen using VCDS, OBDeleven etc ?

No, I have just ordered Carista though. Is a forced regen going to be any different to the regen the car does itself?

 

[DEAN0]

A forced regen is what the dealer would do when an owner has taken the DPF passed the normal regen limits.

Not saying yours has been taken passed the normal limit but it can't hurt to do a forced regen and see how far down the soot loading comes.

If a forced regen doesn't work - then you may have a faulty sensor that is within limits but is reading off enough to trigger regens.

 

[BillyCool]

Hi, I’m hoping someone with the same problem as me that has fixed their issue could help. Seat Leon 2.0 tdi 184 128k miles

I noticed a post on this forum about the same issue with multiple people commenting saying they’re having the same issue but no one posted a fix and the post went dead.

My car will start a Dpf regen as soon as I set off from a stand still, completing the regen then turning the car on/off and setting off again, the VAG Dpf app shows 0% soot then jumps to 100% as soon as I start driving again triggering a regen. In order to finish my regens I have to drive for so long then let the car idle finish, if I carry on driving to 90 minutes the dpf light will come on until I turn the car off.

Oil ash showing 60% full. Is the dpf at the end of its life? No sign of reduced power, just constant dpf regens.

My 2014 184 is at 142,000 miles with oil ash residue of 56.6g or 71%. It still regens fine around 120-140 miles if doing short drives (7 miles each way to work) or longer motorway runs with a regen around 180-200 miles.

It does sometimes tell me on VAG DPF that it's 70% full but suddenly jumps to 100% and regens the next time I drive it. It's not an issue for me as my mileage is 120+ miles so it's not doing a premature regen. My DPF light has never come on.

Yours is a bit odd and could be a bad sensor. It might be the best place to start. If your DPF light is coming on, that suggests is cannot complete a regen or the sensor is giving bad data. I think there is also a sensor on the exhaust but I can't say for sure.

A forced regen would effectively do what your car does anyway and should only be done if the DPF light comes on and you've gone past the point at which the car can trigger a regen itself.

I can't say for sure what it is. I do know someone else had the feed pipe to the sensor full of gunk and that tricked the sensor, so not a bad sensor but partially blocked pipe.

 

[SuperV8]

Do you have high oil consumption?
How often do you top up the oil vs how many miles since last time?

 

[Magiic]

Do you have high oil consumption?
How often do you top up the oil vs how many miles since last time?

Yeah I have high oil consumption, although it only seems to be on the motorway. I did a road trip of 1500 miles a couple months back and had to top up with 5L of oil during the trip. I’ve done 1000 miles since then and not had to top up at all, I don’t use the motorway much.

Just did another run to try clear the dpf, this time a little more aggressive keeping my rpm above 2500. It wouldn’t budge past 4% after an hour so I let it idle finish, turned engine on and off and after 5 minutes of driving it jumped from 4% 0.73g to 100% 22.64g, there wasn’t a gradual increase just a jump after a few mins of driving.

I also tried out Carista, and it’s not showing any faults with the dpf

 

[Magiic]

My 2014 184 is at 142,000 miles with oil ash residue of 56.6g or 71%. It still regens fine around 120-140 miles if doing short drives (7 miles each way to work) or longer motorway runs with a regen around 180-200 miles.

It does sometimes tell me on VAG DPF that it's 70% full but suddenly jumps to 100% and regens the next time I drive it. It's not an issue for me as my mileage is 120+ miles so it's not doing a premature regen. My DPF light has never come on.

Yours is a bit odd and could be a bad sensor. It might be the best place to start. If your DPF light is coming on, that suggests is cannot complete a regen or the sensor is giving bad data. I think there is also a sensor on the exhaust but I can't say for sure.

A forced regen would effectively do what your car does anyway and should only be done if the DPF light comes on and you've gone past the point at which the car can trigger a regen itself.

I can't say for sure what it is. I do know someone else had the feed pipe to the sensor full of gunk and that tricked the sensor, so not a bad sensor but partially blocked pipe.

I might just have to take it to a garage to find out what’s going on, I hope it’s just a sensor but I thought the car would throw some kind of fault code if there was a problem with a sensor?

 

[DEAN0]

I hope it’s just a sensor but I thought the car would throw some kind of fault code if there was a problem with a sensor?

If the sensor is within its limits it won't show a fault code.

But a faulty sensor could make the car think it needs to do a regen

 

[SuperV8]

Yeah I have high oil consumption, although it only seems to be on the motorway. I did a road trip of 1500 miles a couple months back and had to top up with 5L of oil during the trip. I’ve done 1000 miles since then and not had to top up at all, I don’t use the motorway much.

Just did another run to try clear the dpf, this time a little more aggressive keeping my rpm above 2500. It wouldn’t budge past 4% after an hour so I let it idle finish, turned engine on and off and after 5 minutes of driving it jumped from 4% 0.73g to 100% 22.64g, there wasn’t a gradual increase just a jump after a few mins of driving.

I also tried out Carista, and it’s not showing any faults with the dpf

This will be why your DPF is struggling.
They don't like oil going through them.
5L for 1500miles is very bad.
Keep an eye on your oil consumption -

 

[Sham]

My 2014 184 is at 142,000 miles with oil ash residue of 56.6g or 71%. It still regens fine around 120-140 miles if doing short drives (7 miles each way to work) or longer motorway runs with a regen around 180-200 miles.

It does sometimes tell me on VAG DPF that it's 70% full but suddenly jumps to 100% and regens the next time I drive it. It's not an issue for me as my mileage is 120+ miles so it's not doing a premature regen. My DPF light has never come on.

Yours is a bit odd and could be a bad sensor. It might be the best place to start. If your DPF light is coming on, that suggests is cannot complete a regen or the sensor is giving bad data. I think there is also a sensor on the exhaust but I can't say for sure.

A forced regen would effectively do what your car does anyway and should only be done if the DPF light comes on and you've gone past the point at which the car can trigger a regen itself.

I can't say for sure what it is. I do know someone else had the feed pipe to the sensor full of gunk and that tricked the sensor, so not a bad sensor but partially blocked pipe.

 

[Sham]

Hi guys been reading up on DPF issues I have a Engine ML on and a glow plug light flashing I have tried clearing the fault with my OBD but it’s not a very good one and even tried with a OBD11 VAG one but the light does not clear and the DPF regen light is not coming on at all anymore I mainly do short journeys but whenever the DPF light came on previously I would go for a blast on the motorway and it would regen and clear up but now it doesn’t !! How do I do a forced regen as the car is in limp mode I am adding pics of my dash display and the OBD fault codes. It’s says it’s cleared up but when I restart the engine it just comes back on and the car is in limp mode won’t go over 2400/2500 RPM !!!

 

[Sham]

Also I am getting a stop start error message on my display but not getting any error codes for it on my OBD. I did change the battery recently as my old one was flat I had to use a jump starter pack a few times until I got a new battery. It is the correct One for this car and a stop start battery I brought a decent one AGM I believe it was any ideas on what that could be please ? If I switch the stop start off using the button the warning goes away so I just leave it off

 

[Sham]

So how can I force a regen myself without taking to a garage and how do I get it out of limp mode ?? Any help
Or guidance would be much appreciated guys il attach a few more pics from my OBD oh n also it is consuming a lot of oil since the MIL light has been on. I check it regular and it’s always dry so I top up two
Litres and it’s not long had a service and a new timing belt and water pump!! so don’t know what’s going on. Can’t afford to spend loads more money on it ! It’s a 2015 1.6tdi with 109k miles on it.

 

[Sham]

It had a new cabin air filter, new glow plugs, fresh oil and filters during its service in May this year and I was out the country for 2 months so it was worked up! Not driven it much either so shouldn’t be having these issues!!! Worse thing is it had already had a new timing belt and water pump done but I had no record I the service book or receipts as got from a dealer who didn’t know either so got it done as a pre caution for £1200 from a VAG specialist who kindly told me after he did it that it wasn’t the original ones so didn’t even need it doing since then I have lost all faith in mechanics !!!

 

[Sham]

Lastly do you think it could be faulty sensors due to the low voltage from dead battery that’s causing these issues ?? If so where are the sensors located and is it possible to change myself ?? Thanks again and sorry for long winded messages