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쐌 Blocked or bent rubber tube to EVAP control system pressure
sensor
쐌 Loose or disconnected rubber tube
쐌 EVAP canister vent control valve and the circuit
쐌 EVAP canister purge volume control solenoid valve
쐌 Absolute pressure sensor
쐌 Fuel tank temperature sensor
쐌 O-ring of EVAP canister vent control valve is missing or dam-
aged
쐌 Water separator
쐌 EVAP canister is saturated with water
쐌 Fuel level sensor and the circuit
쐌 EVAP control system pressure sensor
쐌 Refueling control valve
쐌 ORVR system leaks
쐌 Foreign matter caught in EVAP canister purge volume control
solenoid valve
DTC Confirmation Procedure
NGEC1050
Refer to “P1441 EVAP CONTROL SYSTEM (VERY SMALL LEAK)
(NEGATIVE PRESSURE)”, EC-1077.
Diagnostic Procedure
NGEC1051
Refer to “P1441 EVAP CONTROL SYSTEM (VERY SMALL LEAK)
(NEGATIVE PRESSURE)”, EC-1077.
DTC P1440 EVAP CONTROL SYSTEM (SMALL LEAK)
(POSITIVE PRESSURE)
VG33E
On Board Diagnosis Logic (Cont’d)
EC-1076
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