Was driving my Mercedes-Benz E Class Estate and noticed loss of power especially on higher gears despite flooring the accelerator. There was a check engine light and upon scanning the computer the scanner picked up Codes P2454 & P244A. Here is how I DIY fixed the issue by replacing the DPF Pressure Sensor and used the DPF Pressure Sensor hose to funnel a DPF cleaning solution to help clean the DPF as a good measure. Hope you enjoy the video.