All the sensodrive faults are expensive, clutches, clutch solenoids, gear selector actuators are all expensive. If its a wiring problem the costs come from labour if you have 2 faults it not going to be worth it, one may even write it off as uneconomical to repair.
citroen c3 mk1 gear selector cable linkage 5 speed 1.4 hdi 8hz engine 05-09 GEAR LEVER LINKAGE CONTROL CABLE FOR CITROEN C2, C3, C3 I MK1, PLURIEL,2444CQ CITROEN C3 2020-21 5 SPEED MANUAL GEAR LINKAGE CABLES (1.2l 12v Petrol) P0170