DPF keeps regenerating

[umerb]

I have just recently bought a Leon FR2 2.0 TDI, it drives perfectly cant complain, only issue is the DPF keeps regenerating, I have even been on 2 motorway drives for around 30/40 minutes, keeping it around 2500rpms. Today I went on another motorway drive for around 45/50 minutes to try let it regenerate properly however there was some heavy traffic at points but i did manage to get at least 25/30 minutes of driving with 2500rpms, but still it was not able to regenerate, and then as i got home, the DPF light came on. I left the car off because I will try go to the mechanic tomorrow. But I have plugged an obd in since and its showing zero faults and all sensors to be working properly, I am just not able to check the dpf levels with the obd I have.

What should I do? Any advice would be great!

 

[SteveGSXR600K1]

Unfortunately, probably the reason it went up for sale. I'd look to see if you have a local 'The DPF Doctor' or similiar, that specialise in diagnosing DPF issues. A garage might just say you need a new DPF, but the problem lies elsewhere and would return at some point.

 

[Frostybear]

Yes unfortunately you've bought a car with a major issue. If you've done all those motor miles it should be well regenerated by now. Avoid driving the car if you can until the issue is sorted, because if you keep driving it the dpf will get more and more full until it is critically full and then the dpf is wrecked

 

[DEAN0]

Once you get above a certain soot level - regen by driving is no longer possible.
If you have VCDS or OBDeleven you can do a forced regen like the stealers would do to try and recover it.

 

[SuperV8]

How many miles has it done?

 

[cuthound]

Once you have resolved your DPF issues, I would advise getting the VAG DPF app for your phone (available on Apple and Android). The paid for version shows the percentage full reading of the DPF, soot levels, time and mileage since last regen and lots more.

It helps you to ensure the DPF is regenned as soon as it becomes full, by extending your drives when it is close to 100% full.

 

[umerb]

Yes unfortunately you've bought a car with a major issue. If you've done all those motor miles it should be well regenerated by now. Avoid driving the car if you can until the issue is sorted, because if you keep driving it the dpf will get more and more full until it is critically full and then the dpf is wrecked

Ahhh im hoping not, the last regen did complete as the idle went down and then the fans were off after i turned the engine off. I will go to the mechanics tomorrow and see what they have to say.

 

[umerb]

Once you have resolved your DPF issues, I would advise getting the VAG DPF app for your phone (available on Apple and Android). The paid for version shows the percentage full reading of the DPF, soot levels, time and mileage since last regen and lots more.

It helps you to ensure the DPF is regenned as soon as it becomes full, by extending your drives when it is close to 100% full.

Yep definitely already thinking about this, its just a shame that its something we have to think about especially with all the technology we have now

 

[umerb]

How many miles has it done?

Currently on 95k

 

[umerb]

Once you get above a certain soot level - regen by driving is no longer possible.
If you have VCDS or OBDeleven you can do a forced regen like the stealers would do to try and recover it.

Yh i understand that but the car is still regenerating, im hoping its only a sensor

 

[umerb]

Unfortunately, probably the reason it went up for sale. I'd look to see if you have a local 'The DPF Doctor' or similiar, that specialise in diagnosing DPF issues. A garage might just say you need a new DPF, but the problem lies elsewhere and would return at some point.

I do believe he was a geniune seller but he wasnt doing the miles justified for the diesel, but i will definitely get it checked out.

 

[SuperV8]

Currently on 95k

Ok, so that would be unusual for the DPF to completely block at that mileage without some other external factor - like high oil consumption (burning oil is bad for your DPF) or a faulty sensor.

How many miles do you drive per year? what's your usual driving route (diesels aren't the best for short/town journeys)?

 

[R3k1355]

A clean should sort it out, find a company nearby that offers cleaning, the solution Terraclean make for DPF cleaning is supposedly very good.

 

[umerb]

Ok, so that would be unusual for the DPF to completely block at that mileage without some other external factor - like high oil consumption (burning oil is bad for your DPF) or a faulty sensor.

How many miles do you drive per year? what's your usual driving route (diesels aren't the best for short/town journeys)?

I do 8-10k a year, it’s mainly motorways hence why i bought a diesel car