dpf pressure sensor

Hi I have got a fault code with my Audi A3 2015 1.6tdi. Fault code is p200200 dpf bank 1- and the engine management light is on, however there is no loss of power car has been constantly on the motorway - recently done 8 hour drive on the motorway so regen should be done. Car fuel efficiency...

Engine Management light is on and can be reset. 1 Fault found. 4914 - Diesel Particle Filter, Differential Pressure Sensor P2453 00 [237] - Implausible Signal Particle filter: Differential pressure: -54 hPa Particle filter: offset for differential press: -35 hPa Exhaust gas vol. flow...