Dpf full warning light - 2006 Jaguar S-Type

Potential causes for the DPF light coming back on in a 2010 Seat Ibiza 1.6 TDI after cleaning are:

1. DPF re-clogging - If the DPF is not properly regenerating, it can re-clog and trigger the light.
2. Sensor malfunction - The sensors monitoring the DPF and exhaust system may be faulty, causing the light to come back on.
3. Software problem - A software issue could trigger the DPF light even if the DPF is functioning normally.
4. DPF damage - The DPF may have been damaged during the cleaning process, requiring replacement.

It's advisable to have a professional diagnose the issue using specialized diagnostic equipment. A qualified technician can determine the root cause of the recurring DPF light.

As the light is on you will need to regenerate your dpf. You local spares shop will sell something you put in your fuel tank to regenerate your dpf. Simply put it in your fuel tank and go for a good run and take your revs above 2000 rpm and after about 20/25 mile the light should go out.

Are you full of DPF fluid? I would think you have a level sensor telling the ECU that you are out of fluid and setting off both lights.

Error 55 is Diesel Particulate Filters (DPF)
Reducing diesel soot emissions by 80%

If you're buying a new car and plan to use it mainly for town-based, stop/start driving it would be wise to avoid a diesel car fitted with a Diesel Particulate Filter (DPF) because of the possible hassle of incomplete 'DPF regeneration'.

The exhaust emissions standards for new cars have effectively required fitment of a DPF in the exhaust of diesel cars since 2009 when the 'Euro 5' standard came into force. In fact, many cars registered before 2009 will have had one fitted too in anticipation of the change in standards.

Standards aim to deliver an 80% reduction in diesel particulate (soot) emissions but the technology's not without problems - AA patrols are regularly called to cars with the particulate filter warning light on indicating a partial blockage of the filter.

Even if your driving isn't mainly urban/stop-start, changes to driving style may be required to get maximum benefit from these systems.

How do they work?
Diesel Particulate filters (DPF) or 'traps' do just that, they catch bits of soot in the exhaust.

As with any filter (think of the bag in your vacuum cleaner) they have to be emptied regularly to maintain performance. For a DPF this process is called 'regeneration' - the collected soot is burnt off at high temperature to leave only a tiny ash residue.

Regeneration may be either passive or active.

Passive regeneration
Passive regeneration takes place automatically on motorway-type runs when the exhaust temperature is high. Because many cars don't get this sort of use car manufacturers have to design-in 'active' regeneration where the engine management computer (ECU) takes control of the process.

Active regeneration
When the soot loading in the filter reaches a set limit (about 45%) the ECU can make small adjustments to the fuel injection timing to increase the exhaust temperature and initiate regeneration. If the journey is a bit stop/start the regeneration may not complete and the warning light will come on to show that the filter is partially blocked.

It should be possible to start a complete regeneration and clear the warning light by driving for 10 minutes or so at speeds greater than 40mph.

If you ignore the warning light and keep driving in a relatively slow, stop/start pattern soot loading will continue to build up until around 75% when you can expect to see other dashboard warning lights come on too. At this point driving at speed alone will not be enough and you will have to take the car to a dealer for regeneration.

Expensive repairs
If you continue to ignore warnings and soot loading keeps increasing then the most likely outcome will be that you will have to get a new DPF costing around £1000.

DPF additives
The most commonly fitted type of DPF has an integrated oxidising catalytic converter and is located very close to the engine where exhaust gases will still be hot. This heat means that passive regeneration is possible.

There's not always space close to the engine though so some manufacturers use a different type of DPF which uses a fuel additive to lower the ignition temperature of the soot particles so that the DPF can be located further from the engine.

The additive is stored in a separate tank and is automatically mixed with the fuel whenever you fill up. Only very small quantities are used though so a litre of additive should treat around 2800 litres of fuel - enough to cover 25,000 miles at 40mpg.

You will have to pay to get the additive tank refilled at some time in the car's life, and we've heard reports of dealers charging up to £200 to re-fill a half empty tank.

AA experience
We're seeing some evidence of DPF systems failing to regenerate even on cars used mainly on motorways.

On cars with a very high sixth gear the engine revs may be too low to generate sufficient exhaust temperature for regeneration. Occasional harder driving in lower gears should be sufficient to burn off the soot in such cases.

With this type of DPF regeneration will be initiated by the ECU every 300 miles or so depending on vehicle use and will take 5 to 10 minutes to complete. You shouldn't notice anything other than perhaps a puff of white smoke from the exhaust when the process is completed.

There's no evidence in AA breakdown data that the problem's going away - newer car models seem just as likely to sufffer DPF problems if not driven 'correctly' as those built when DPF's were introduced.

Check the handbook
If you buy a car with a DPF fitted it's important to read the relevant section of the vehicle handbook so that you understand exactly what actions to take if the warning light illuminates and how, if at all, your driving style may need to be adjusted to ensure maximum DPF efficiency and life.

the flashing light it is a warning that something is not right and could cost you if you dont pay attention to it.take it to kia for a diagnostic test.to determine the problem it could be one of many problem.these cars are full of sensor units which pick up faults and transfers this to the computer which in turn alerts you there is a problem by flashing the warning light.

I had similar problems and had to have a manual regeneration of DPF (this should be done by professional).
This only fixed mine temporarily and the light was back on a few days later, mine turned out to be a faulty sensor which i replaced (about 60 pounds ) and has been fine ever since.

Causes
- Exhaust leak
- Improperly installed or loose Exhaust Gas Temperature (EGT)
- Low engine compression
- Corroed fuel injector
- Water in the fuel system
_ fuel filter or water seperator fouled.
When is the code detected?
The P2459 will set if the Engine Control Module (ECM) detects that the average time between completed regenerations is less than a calibrated threshold.
Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
P2459 Description The particulates in the exhaust gases are collected by the Diesel Particulate Filter (DPF). When the filter becomes saturated with particulates, they are incinerated by a regeneration process. The regeneration process increases the exhaust gas temperature, warning the Diesel Oxidation Catalyst (DOC) first, the warning the DPF. The Engine Control Module (ECM) monitors the system with inputs from two Exhaust Gas Temperature (EGT) sensors 1 and 2 and the exhaust differential pressure sensor.

Read more: http://engine-codes.com/p2459.html#ixzz1xGkI9BsX

Read more: http://engine-codes.com/p2459_gmc.html#ixzz1xGjSKrIa

The DPF is designed to 'Burn off' the soot deposits that accumulate, but in order for this to happen the exhaust has to become really hot. The DPF will fill up if the vehicle does a lot of short trips and the exhaust fails to get hot. The cure is a long hard drive

This is down to the way the vehicle is driven, if you are doing a lot of short stop start journeys the dpf will fill up a lot quicker than when driven on a motorway.
If you have an amber light and 'DPF FULL' displayed you can do a particle filter regeneration. To carry out a regeneration the vehicle must be driven on a motorway at around 60mph for approx 20 mins to carry out re-gen, there will also be a burning smell when this is complete.
If you have a red light and 'DPF FULL' displayed then there may be a fault which will require investigation.

Change the air filter