DPF Fault

Hi all,

my wife is about to give birth and I’d rather not spend lots of money but I do want a fault free car 🙈. 

1.4 engine has the following codes, fault keeps returning 

P0474 exhaust pressure sensor

P2456 DPF pressure sensor

Research points towards the differential sensors. There are two. My reader says sensor A has an intermittent signal. 
 

would this sensor cause both faults and what’s the most cost effective way of coding the sensor? 
 

thanks