Why is the DPF light flashing on a truck?

[DiSawyer]

Truck DPF light flashing indicates a fault in the truck's exhaust system. Here is some extended information: 1. DPF (Diesel Particulate Filter) is a particulate filter, usually installed in the exhaust system of a truck's diesel engine. The diesel particulate filter can effectively reduce the emission of harmful particles in vehicle exhaust, purifying the environment and saving energy. 2. The DPF has three working states: automatic regeneration, manual regeneration, and on-demand regeneration. When the DPF is in automatic regeneration state, its color is green. When the DPF is in manual regeneration state, its color is yellow. On-demand regeneration can be manually activated by pressing the DPF button for 3-5 seconds, which is quite flexible.