What is the explanation for the Toyota HV control system regeneration failure?

[MacIan]

DPF regeneration failure light comes on because there is a large accumulation of soot in the DPF, and the DPF is close to being blocked. The following is an introduction to the working status of the DPF: 1. Automatic regeneration: The DPF indicator shows green, and no manual intervention is required at this time. This state usually occurs when the vehicle is driving at high speed (above 80km/h). Continue to maintain normal driving conditions, and the DPF indicator will automatically turn off after the particulate matter treatment is completed. 2. Manual regeneration: The DPF yellow indicator light will flash, which usually occurs when the vehicle is driving at low speed (below 80km/h). It can be operated at any time and is suitable for users who only drive in urban areas. For example, after returning home from work, when the vehicle is parked, press and hold the DPF processing button for 3-5 seconds to start the detection. If the yellow indicator light flashes, it means manual regeneration is required. In this case, press the DPF button again, and the yellow indicator light will stay on. Wait for 15-30 minutes, and when the indicator light turns off, it means the particulate matter treatment is completed.