P0456

DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak)

Wiring Diagram:

System / Wiring Diagram

System / Circuit Description
While engine running, ECM closes EVAP canister vent valve and opens EVAP canister purge valve. If EVAP control system is in good condition, EVAP control system pressure that detected by fuel pressure and temp. sensor becomes down. After that, ECM closes EVAP canister purge valve leaving EVAP canister vent valve is closed. If EVAP emission control system is in good condition, the fuel tank pressure rises specified rate.

DTC Detecting Condition:

DTC Detecting Condition and Trouble Area

Step 1 - 3:

Step 4 - 8:

DTC Troubleshooting

WARNING: This work must be performed in a well ventilated area and away from any open flames such as gas hot water.