How much does it cost to repair a P0449 code?

Question

How much does it cost to repair codes p0449 and p0455

Answer 1

P0455 Evaporative emission large leak detected

P0449 Evaporative emission vent solenoid control circuit

With these code having P0449 in the mix, this would have to be looked into first, P0449 is mostly a power problem to the solenoid, this is fused protected , this should be checked first listed in the engine fuse/relay box as CANISTER replace the fuse if open this is a 15amp fuse