After repair for P0447, How long before check engine light goes out?

Question

After replacing the evap canister vent control to clear code P0447, how long should it take for check engine light to go off?

Answer 1

Hi there,

This really depends on the amount of time it takes the car to run a self test. The best method is to clear the codes with a code reader, otherwise it could be a long time. The conditions have to be met for the car to run the self test.