I fixed my P1456 code by replacing the 2 way valve aka vapor canister purge valve. I posted in another thread that i found raw brown gas leaking out of it. After replacing this purge valve i can finally hear the released pressure when i open my gas tank cap.
http://www.carid.com/1998-honda-acc...cagpspn=pla"&gclid=CMvU3PnPtLwCFaY1Qgodhy4AjA
http://www.carid.com/1998-honda-acc...cagpspn=pla"&gclid=CMvU3PnPtLwCFaY1Qgodhy4AjA
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