fiesta 1.4 tdci mk6 - 1.4 tdci fault codes - rockerr

Recently had an issue with the car loosing power with no fault codes

But today with obd2 connected I managed to get a fault code of the car well 4 of them

P061a

P0626

P0191 fuel rail pressure sensor range\performance

U0140

The most obvious is the fuel rail pressure sensor fault code could this cause the others to come up?

Do you think its a faulty sensor? Are all the codes related?

What symptoms would a a fuel rail sensor give?