G450 fault

[Adamm]

I have had the engine management light on for a couple of weeks and my fault reader says the code is p0472 exhaust pressure sensor low. I have a new sensor on the way to me in the post.

However since then the coil light has started flashing and there is a massive reduction in power with the extra fault code of p2002 dpf efficiency low bank 1. 

From looking around online am I right in thinking that this code can be caused by the first one? And if I was to replace the sensor would I need to do a force regen on the dpf? 

There are no other lights on the dash the dpf blocked light isnt active. The car goes on long journeys of 100 miles plus at least twice a week.

 

Thanks