what is my next step to check or replace for my evap p0456 code .

Question

Gas cap changed and smoke test done dealer said it was okay well days later it comes back on again

Answer 1

P0456 Evaporative emission system small leak detected

Have the Recall for the fuel tank vapor canister inspection / replacement done. and also the  Recall for the fuel tank control valve performed Recall # NHTSA13V043000