Threw a code today

amilliems6

Member
:
MazdaSpeed6
P0455
Evaporative emission system leak detected (gross leak) ON 2 Evaporative

Any ideas/solutions/opinions?
 
Doing a quick search it seems like its due to not tightening the gas cap all the way or a faulty one. Not sure if there is another diagnosis, hopefully someone else can chime in.
 
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