DPF’s are great for the environment but only if they reach the correct operating temperatures to regenerate every once in a while. Similar to EGR problems, the DPF can become clogged up from city driving where the car does not get up to it’s normal operating temperature.
How does a DPF Work in Diesel Cars?
Regardless the brand of your car, the process works in much the same way: exhaust gases pass through the DPF, leaving large soot particles behind. Unfortunately, it’s these particles that can cause problems. The soot can block the filter, stopping the engine from running and leaving you with a repair bill that can cost you thousands of euros/pounds or dollars etc.
To stop this from happening, the soot needs to be burned at a high enough temperature to turn it into smaller ash particles, which can then be expelled from the system. It’s when this cleaning, or ‘regeneration’ process is interrupted that the majority of issues with DPFs occur.
There are 3 different types of DPF regeneration, which are active, passive and forced.
Unfortunately many diesel car owners do not realize how they are actually causing a blocked DPF themselves. The main reason for DPF’s failing is due to car owners not doing enough highway miles and driving too frequently in city areas.
How long until a DPF will fail is hard to tell because if you regularly use JLM DPF cleaner as a preventive additive you might never encounter problems!
The most common reasons for DPF failures are:
As the majority of DPF’s are installed on newer cars, you will more than likely have a trip computer. Error codes such as the DPF light or EML (Engine Management Light) will be the first symptoms of a failing DPF.
However, sometimes these warning lights can be false alarms and you should try clearing the fault using a OBD2 diagnostic tool. If the warning light continues to display, you will notice the following symptoms:
The cost of cleaning or replacing your DPF sounds scary but you can forget this following some simple driving habits. The main reason DPF’s get blocked is due to short trips and town driving.
With that in mind, here are 7 ways to fix a blocked DPF:
If you are currently in limp mode, adding JLM DPF cleaner to your fuel tank and driving at high RPM (step 2) will be your best chance of getting out of limp mode. Once you have normal power, go for a long drive.
Always get your error codes read by a JLM DPF Doctor that has all the necessary diagnostic tools ASAP!
Le réseau JLM DPF Doctor offre un diagnostic professionnel du filtre DPF et du filtre à particules diesel, afin de résoudre la cause profonde de votre problème DPF. Faites partie de l’équipe!
Das JLM DPF Doctor Network bietet professionelle DPF-Reinigung und Dieselpartikelfilter-Diagnose, um die Ursache Ihres DPF-Problems zu beheben. Sei Teil des Teams!
Het JLM DPF Doctor Network biedt professionele DPF-reiniging en dieselpartikelfilterdiagnostiek om de hoofdoorzaak van uw DPF-probleem op te lossen. Maak deel uit van het team!
The JLM DPF Doctor Network offers Professional DPF Cleaning and Diesel Particulate Filter diagnostics, to solve the root cause of your DPF problem. Be part of the team!