Details On DTCs

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P0456-00: (PCM - VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location	Evaporative gas leakage (leakage amount: extremely low)
Detection condition	Determination conditions	Hole of 0.02 in (0.5 mm) or more in evaporative gas passage
	Preconditions	Fuel level in fuel tank: 15-85 % ^1 Period ignition is switched off before engine starts: 210 min or more Barometric pressure: 72.23 kPa {0.7365 kgf/cm ² , 10.48 psi} or more ^1 Time elapsed from engine start: 15-90 min Desired ambient air temperature: 4.44-37.78°C {40.0-100.0°F} ^1 The following DTCs are not detected: Fuel tank pressure sensor: P0451:00, P0452:00 and P0453:00 Purge solenoid valve: P0443:00 CV solenoid valve: P0446:00 EVAP monitor: P00FE:00, P0442:00, P0455:00, P0457:00 and P0496:00 Fuel gauge sender unit: P0460:00, P0461:00, P0462:00 and P0463:00 ^1 : Standard can be verified by displaying PIDs using M-MDS
	Malfunction determination period	75 s period
	Drive cycle	2
	Self test type	CMDTC self test
	Sensor used	Fuel tank pressure sensor
Fail-safe	Not applicable
Vehicle status when DTCs are output	Heating is ineffective after engine is started
Possible cause	Missing or loose fuel filler cap Fuel filler cap malfunction Fuel tank pressure sensor malfunction CV solenoid valve malfunction Purge solenoid valve malfunction Evaporative gas passage malfunction Improper connection of evaporative hose Evaporative hose damaged Pressure control valve malfunction Charcoal canister main malfunction Charcoal canister sub malfunction Catch tank malfunction Fuel pump unit loose Fuel tank malfunction PCM malfunction