DTC Summary

WARNING: This page is about a different car, the 2010 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

DTC No.	Monitoring Item	Malfunction Detection Condition	Trouble Area	Detection Timing	Detection logic
P0455	EVAP gross leak	Vacuum pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. 0.02 inch leak pressure standard measured at start and at end of leak check. If stabilized pressure higher than [second 0.02 inch leak pressure standard x 0.2], ECM determines that EVAP system has a large leak	Fuel tank cap (loose) Leakage from EVAP line (Canister - Fuel tank) Leakage from EVAP line (EVAP VSV - Canister) Pump module Leakage from fuel tank Leakage from canister	While ignition switch off	2 trip
P0456	EVAP small leak	Vacuum pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. 0.02 inch leak pressure standard measured at start and at end of leak check. If stabilized pressure higher than second 0.02 inch leak pressure standard, ECM determines that EVAP system has a small leak	Same above	While ignition switch off	2 trip