Exhaust Filter — Cleaning

NOTE: Some engine models are not equipped with a diesel particulate filter (DPF).

The diesel particulate filter (DPF) is a critical component in the engine’s emissions control system, which is required to meet governmental emissions regulations. The exhaust filter captures diesel particulate matter or “soot” to prevent its release into the atmosphere. This soot must be eliminated from the DPF to keep it functioning properly. The process of eliminating collected soot is carefully controlled by the engine control unit (ECU) and is called “exhaust filter cleaning” or “regeneration”. During this process, a rise in exhaust temperature occurs and allows the soot to be oxidized within the DPF.