LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2007 >> Outback XT Limited, Standard >> 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
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Method

Judge as NG when the continuous time of meeting the malfunction criteria below becomes 3 seconds or more.

Judgment Value 

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Fuel tank pressure ≤ -4.0 kPa (-30mmHg,-1.18inHg)

Time Needed for Diagnosis:  3 seconds

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

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

Judgment Value 

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Fuel tank pressure > -4.0 kPa (-30 mmHg,-1.18 inHg)
Cumulative time when all the malfunction criteria below are met. ≥ 30 seconds
Purge control solenoid valve duty ratio Not = 0
Fuel temperature -10 ↔ 55°C (14 ↔ 131°F)
Intake manifold relative pressure ≤ -26.7 kPa (-200 mmHg, -7.87 inHg)