Re: p1457 on a 2003 CR-v
There is a bulletin that DeanHondaPGH listed above pertaining to the evap valve, but before you replace it check basics first. Make sure they hooked the hoses and connector back up to the purge soleonoid. That is the evap piece located near the air filter. Make sure the canister vent hose isn't clogged with trash and leaves.
ASE Certified Honda/Acura Specialist, Electrical specialist.