Question

What part is needed to repair codes P0440, P0441, and P0446 for the 2000 Toyota Avalon?

Answer 1

Start by replace the gas cap with an Orginal toyota part, you can also check by the engine bay and EVAP canister (under the car near the gas tank) for loose, cracked or disconnect vaccum hoses.

Answer 2

P0440 TOYOTA - Evaporative Emission Control System Malfunction
Read more: https://www.autocodes.com/p0440_toyota.html

P0441 TOYOTA - Evaporative Emission Control System Incorrect Purge Flow
Read more: https://www.autocodes.com/p0441_toyota.html

P0446 TOYOTA - EVAP System Vent Control Circuit
Read more: https://www.autocodes.com/p0446_toyota.html