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Home >> Subaru >> 2005 >> Forester XT, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P1443 Vent Control Solenoid Valve Function Problem >> Diagnostic Method
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Diagnostic Method

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 3 seconds.

Judgment Value 

MALFUNCTION CRITERIA AND THRESHOLD VALUE

Malfunction Criteria Threshold Value
Tank pressure -4.0 kPa (-30 mmHg, -1.18 inHg)

Time Needed for Diagnosis:  3 seconds

Malfunction Indicator Light Illumination:  Illuminates as soon as the malfunction occurs.

Judge OK and clear the NG when the malfunction criteria below are completed.

Judgment Value 

MALFUNCTION CRITERIA AND THRESHOLD VALUE

Malfunction Criteria Threshold Value
Tank pressure -4.0 kPa (-30 mmHg, -1.18 inHg)
Cumulative time when the malfunction criteria below are completed >/= 30 seconds
Duty ratio of purge control solenoid valve Except 0
Fuel temperature -10 < --> 45°C (14 < --> 113°F)
Relative ratio of intake manifold -26.7 kPa (-200 mmHg, -7.87 inHg)