DTCS Relating To EVAP System

DTCS REFERENCE

DTCs	Monitoring Items	Reference
P043E	0.02 inch orifice clogged (built into pump module)	P043E
P043F	0.02 inch orifice high-flow (built into pump module)	P043F
P0441	Purge VSV (Vacuum Switching Valve) stuck closed Purge VSV stuck open Purge flow	P0441
P0450	Pressure sensor (built into pump module) voltage abnormal fluctuation	P0450
P0451	Pressure sensor (built into pump module) noise Pressure sensor (built into pump module) signal becomes fixed/flat	P0451
P0452	Pressure sensor (built into pump module) voltage low	P0452
P0453	Pressure sensor (built into pump module) voltage high	P0453
P0455	EVAP gross leak	P0455
P0456	EVAP small leak	P0456
P2401	Vacuum pump stuck OFF (built into pump module)	P2401
P2402	Vacuum pump stuck ON (built into pump module)	P2402
P2419	Vent valve stuck closed (built into pump module)	P2419
P2420	Vent valve stuck open (vent) (built into pump module)	P2420
P2610	Soak timer (built into ECM)	P2610

If any EVAP system DTCs are set, the malfunctioning area can be determined using Fig 1.

Fig 1: Malfunctioning Areas Reference Table

NOTE: If the 0.02 inch reference pressure difference between the first and second checks is greater than the specification, the DTCs corresponding to the reference pressure (P043E, P043F, P0441, P0455, P0456, P2401, P2420) will be all stored.