Mitsubishi Lancer Owners Manual
If the DPF warning display illuminates during vehicle operation
Steady illumination of the DPF warning display shows that the DPF has not been able to burn away all of the trapped PM and that, as a result, an excessive amount of PM has accumulated inside it. To enable the DPF to burn away the PM, try to drive the vehicle as follows: ► With the bar graph of engine coolant temperature display stabilized in roughly the middle of the scale, drive for about 20 minutes at a speed of at least 40 km/h (25 mph).
If the DPF warning display subsequently stays on, contact a MITSUBISHI MOTORS Authorized Service Point.
► You do not have to continuously drive exactly as indicated above. Always strive to drive safely in accordance with road conditions.