Question

I got the engine codes P0441 and P0455 on my 2009 Toyota Corolla XRS. I Replaced the gas cap and reset codes; the codes came back. Any ideas?

Answer 1

I the gas cap is new, then the next step is to check for loose or damaged EVAP system hoses and damaged EVAP system components.

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

P0455 TOYOTA Code - EVAP System Gross Leak Detected
Read more: https://www.autocodes.com/p0455_toyota.html

Answer 2

Check you gas cap first it might be loose.