Hi Graham, they seem a bit obvious but maybe it can help, here is the breakdown of the fault code

1. Cable connections between seat switch (S4) and controller (N1:33, N1:38) faulty.
2. Cable connections between pedal position sensor (1B2) and controller (N1:1, N1:32, N1:49, N1:61) faulty.
3. Seat switch (S4) defective.
4. Pedal position sensor (1B2) defective.