HI there
This code means there is an incorrect purge flow in the evap system. This will not typically cause a running issue, however when you fill the tank if the purge valve is sticking open it can cause the engine to flood. Here is some more info on this code.
P0441 TOYOTA - Evaporative Emission Control System Incorrect Purge Flow Read more: https://www.autocodes.com/p0441_toyota.html
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