Related DTCS

DTC

DTCs	Monitoring Items	See
P043E	Reference orifice clogged (built into canister pump module)	DTC P043E EVAPORATIVE EMISSION SYSTEM REFERENCE ORIFICE CLOG UP; DTC P043F EVAPORATIVE EMISSION SYSTEM REFERENCE ORIFICE HIGH FLOW
P043F	Reference orifice high-flow (built into canister pump module)
P0441	Purge VSV (Vacuum Switching Valve) stuck closed Purge VSV stuck open Purge flow	DTC P0441 EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW
P0450	Canister pressure sensor (built into canister pump module) voltage abnormal fluctuation	DTC P0450 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR / SWITCH; DTC P0451 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR RANGE / PERFORMANCE; DTC P0452 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR / SWITCH LOW INPUT; DTC P0453 EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR / SWITCH HIGH INPUT
P0451	Canister pressure sensor (built into canister pump module) noise Canister pressure sensor fixed (built into canister pump module)
P0452	Canister pressure sensor (built into canister pump module) voltage low
P0453	Canister pressure sensor (built into canister pump module) voltage high
P0455	EVAP gross leak	DTC P0455 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (GROSS LEAK); DTC P0456 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (VERY SMALL LEAK)
P0456	EVAP small leak
P2401	Leak detection pump stuck OFF (built into canister pump module)	DTC P2401 EVAPORATIVE EMISSION SYSTEM LEAK DETECTION PUMP CONTROL CIRCUIT LOW; DTC P2402 EVAPORATIVE EMISSION SYSTEM LEAK DETECTION PUMP CONTROL CIRCUIT HIGH
P2402	Leak detection pump stuck ON (built into canister pump module)
P2419	Vent valve stuck ON (closed) (built into canister pump module)	DTC P2419 EVAPORATIVE EMISSION SYSTEM SWITCHING VALVE CONTROL CIRCUIT LOW; DTC P2420 EVAPORATIVE EMISSION SYSTEM SWITCHING VALVE CONTROL CIRCUIT HIGH
P2420	Vent valve stuck OFF (vent) (built into canister pump module)
P2610	Soak timer (built into ECM)	DTC P2610 ECM / PCM INTERNAL ENGINE OFF TIMER PERFORMANCE

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

Fig 1: DTC And Malfunctioning Area Chart

NOTE: If the 0.02 inch leak criterion difference between the first and second checks is greater than the specification, the DTCs corresponding to the leak criterion (P043E, P043F, P2401, P2402 and P2419) will be all stored.