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

Hi there,

This code points to an issue with the EVAP system. Here is a list of possible causes. 

P0446 TOYOTA - EVAP System Vent Control Circuit

Read more: https://www.autocodes.com/p0446_toyota.html