DTC Detecting Condition and Trouble Area

DIAGNOSTIC INFORMATION AND PROCEDURES REFERENCE CHART

DTC detecting condition	Trouble area
P0456: Evaporative Emission System Leak Detected (Very Small Leak) Leak detecting pressure (P5) of EVAP leak check pressure is more than reference pressure-2 (P8) of EVAP leak check pressure. (2 D/C detection logic)	Missing, loose or malfunctioning fuel filler cap, or leakage from cap gasket EVAP control system vacuum passages Fuel tank component parts EVAP canister EVAP canister purge valve EVAP vent value EVAP leak check pressure sensor EVAP leak check module Fuel level sensor and/or its circuit ECM