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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0442 Evaporative Emission Control System Leak Detected (Small Leak) >> Enable Condition

Enable Condition

WARNING: This page is about a different variant/trim than selected.

0.04-inch Diagnosis 

ENABLE CONDITION CHART - 0.04-INCH DIAGNOSIS

Secondary Parameters Enable Conditions
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75.1 kPa (563 mmHg, 22.17 inHg)
Total time of canister purge operation 120 seconds or more
After engine starting 856 seconds or more
Learning value of evaporation gas density ≤ 0.08
Engine speed 1050 - 6000 rpm
Fuel tank pressure ≥ -4.00 kPa (-30 mmHg, -1.18 inHg)
Intake manifold relative vacuum (relative pressure) < -26.7 kPa (-200 mmHg, -7.87 inHg)
Vehicle speed ≥ 32 km/h (20 MPH)
Fuel level 9 - 51 (2.38 - 13.47 US gal, 1.98 - 11.22 Imp gal)
Closed air/fuel ratio control In operation
Fuel temperature -10 -45°C (14 - 113°F)
Intake air temperature ≥-10°C (14°F)
Pressure change per second < 0.23 kPa (1.7 mmHg, 0.07 inHg)
Minimum pressure change value every one second - Maximum pressure change value every one second < 0.23 kPa (1.7 mmHg, 0.07 inHg)
Change of fuel level < 2.5 /128 milliseconds (0.66 US gal/128 milliseconds, 0.55 Imp gal/128 milliseconds)
Air fuel ratio 0.76 - 1.25

0.02-inch Diagnosis 

ENABLE CONDITION CHART - 0.02-INCH DIAGNOSIS

Secondary Parameters Enable Conditions
(At starting a diagnosis)  
Evap. diagnosis Incomplete
Battery voltage ≥ 10.9 V
Atmospheric pressure ≥ 75.1 kPa (563 mmHg, 22.2 inHg)
Time since last incomplete diagnosis event of 0.02-inch leakage  
When cancelling in mode A > 120 sec.
When cancelling in other than mode A > 600 sec.
Total time of canister purge operation 120 seconds or more
After engine starting 120 seconds or more
Fuel temperature -10 - 70°C (14 - 158°F)
Fuel level 9 - 51 (2.38 - 13.47 US gal, 1.98 - 11.22 Imp gal)
Intake manifold relative vacuum (relative pressure) < -8.0 kPa (-60 mmHg, -2.36 inHg)
Fuel tank pressure -0.67 - 1.43 kPa (-5 - 10.7 mmHg, -0.20 - 0.42 inHg)
Vehicle speed ≥ 30 km/h (19 MPH)
Closed air/fuel ratio control In operation
Engine speed 550 - 6000 rpm
(During diagnosis)  
Change of fuel level ≤ Value from Map
Pressure change every one second < 0.06 kPa (0.44 mmHg, 0.02 inHg)
Minimum pressure change value every one second - Maximum pressure change value every one second < 0.07 kPa (0.51 mmHg, 0.02 inHg)
| Pressure change in tank every second | ≤ 0.1 kPa (0.75 mmHg, 0.03 inHg)
Atmospheric pressure change (Mode D) -0.48 - 0.32 kPa (-3.6 - 2.4 mmHg, -0.14 - 0.09 inHg)
Atmospheric pressure change (Mode E) -0.32 - 0.32 kPa (-2.4 - 2.4 mmHg, -0.09 - 0.09 inHg)

Map 

FUEL LEVEL SPECIFICATION CHART

Fuel level ( , US gal, Imp gal) 0 10,2.64, 2.2 20, 5.28, 4.4 30, 7.93, 6.6 40, 10.57, 8.8 50, 13.21, 11 60, 15.85, 13.2
Change ( , US gal, Imp gal) 4.2, 1.11, 0.92 4.2,1.11, 0.92 4.1, 1.08, 0.9 4.0, 1.06, 0.88 3.9, 1.03, 0.86 3.8, 1.0, 0.84 3.8, 1.0, 0.84