WHAT IS A DIESEL PARTICULATE FILTER?
A Diesel Particulate Filter, or DPF, is fitted to diesel engines such as the HDi and BlueHDi. It eliminates the emission of carbonaceous particles, which helps to reduce emissions.
The particle filter system is an essential component of your exhaust system, capturing pollutant gases, and then burning them off periodically.
Citroën was among the first manufacturers to make the fitting of a DPF standard on diesel cars.
The system is made up of:
• A silicon carbide filter to trap pollutants.
• Advanced software, which controls the regeneration of the filter and auto-diagnosis of the system.
• A fuel additive system, built into the vehicle, which injects the appropriate quantities of a specific additive into the tank, whenever you fill up.
REGENERATING YOUR DPF
The filter gradually builds up with particles and on a regular basis needs to burn off the excess. This regeneration process occurs automatically, usually when driving on a motorway for a longer journey.
If you drive in or around town at low speeds or for short trips for an extended amount of time, it's possible for the filter to clog up with particles. You'll get a warning light and a message on the dashboard to make you aware.
To regenerate the DPF, simply plan a slightly longer journey, making sure to drive at speeds above 35mph for 10 minutes or until the light turns off.
GET INTO THE MAINTENANCE HABIT
• Make sure to only use engine oil recommended by Citroën. Some oils contain additives that can block the filter.
• Choose Citroën for your annual service to make sure oil is changed with the best lubricant.
• If you're worried about your DPF, it's best to have it checked by one of our trained technicians before any serious problems occur.