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· Registered
2 Posts
Discussion Starter · #1 ·
Hi. New member here.

Our 2010 Corolla S is showing check engine light, VSC flashing, and traction warning.

My consumer grade code reader shows
P0455 large leak $07e8 and P0441 $07e8 purge flow incorrect.

I replaced the fuel cap with a new OEM one.
Cleared the codes and they came back quickly. Although after a month of light driving, I'm still getting EVAP check incomplete.
Car runs fine.

Can anyone recommend a logical approach to diagnosis?? Will be due for Maryland emissions test before long.


· Administrator
19,026 Posts
Test the purge valve in the engine bay. Need to verify there’s no torn hoses or the purge valve isn’t functionally broken.
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