Fault code p200200

Mo256

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Jan 21, 2020
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Manchester
Hi I have got a fault code with my Audi A3 2015 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 also seems to be fine. Does anyone think it could be just a sensor issue?

thanks
mo