Hi guys! I hope you all guys are doing well. I have a 2006 Mazda 3 i basic, 4-speed semi-automatic car. I got check engine light on due to P0455 EVAP System leak detected (large leak). There is another code P0661 Intake Manifold Tuning valve control circuit low bank 1. What do you guys know about these codes? I watched youtube videos and I found that I can clean the gas cap with wd-40 spray or I should change Canister Purge Valve. What do you guys know about this problem? Can you please help me with that? Thank you
Have you looked up the potential causes of those codes?
https://www.carparts.com/blog/p0455-code-evaporative-emission-system-large-leak-detected/
https://www.carparts.com/blog/p0661-code-intake-manifold-tuning-valve-control-circuit-low/
@chucktobias Thank you!