PO446-Toyota corolla 2000

Question

This is second time -PO446 problem on my car .One month ago, I took it to Toyota dealer to check it (cause engine light was on), their report said "fuel cap is aftermarket" and they replace it then it was solved. This time... I brought it to check in auto repair, they said no leak in this assembling(EVAP system).
I don't know if i need to take it to Toyota again or ...??

Answer 1

P0446 Evaporative emission control system vent control circuit malfunction

Is the CK ENG LT on, when the CK ENG LT comes on, have it check again , until then the freeze frame for why the CK ENG LT came on can be used,