Having problems with your 1999 Ford Taurus ?
Po456 check engine soon
PO456 is a small leak in the evaporative emission controls. It could be a loose gas cap. If the gas cap is on correct, look for a crack in one of the vapor hoses. There are several hoses. Check the vapor hose from the gas tank to the engine, and then check all the hoses connected to that hose. If you can't find it, take it to the shop. The mechanic will blow "smoke" into the hoses and look for the one leaking.
Repair Help & Product Troubleshooting for 1999 Ford Taurus
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