What's the 2005 honda civic code p1456?

When a code P1456 is returned in a 2005 Honda Civic, it means there is an issue with some part of the evaporative emission control (EVAP) system. In most cases it will be the canister, but it can also be the solenoid. The EVAP system prevents vapors from entering the environment by storing them in a canister. It then gets burned after the intake manifold draws it into the engine. Poor gas mileage is generally the firSTSymptom of a failing EVAP canister. You may also experience poor engine performance, difficulty starting the engine, rough idling, gas odor, failed emission test, and difficulty filling the tank. Generally, the check engine light will be on, as well. The average cost to replace the EVAP canister in a 2005 Civic is $210 to $240. Labor accounts for around $50 of that total.