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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0442 Evaporative Emission Control System Leak Detected (Small Leak) >> Enable Condition

Enable Condition

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0.04-inch Diagnosis 

SECONDARY PARAMETERS REFERENCE

Secondary Parameters Enable Conditions
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75.1 kPa (563 mmHg, 22.2 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 ←→6500 RPM
Fuel tank pressure ≥ -4.0 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 9.6 ←→54.4 (2.53 ←→14.37 US gal, 2.11 ←→12.00 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 < 0.13 kPa (0.96 mmHg, 0.04 inHg)
Minimum pressure change value every one second - < 0.23 kPa (1.7 mmHg, 0.023 inHg)
Maximum pressure change value  
Change of fuel level < 2 (2.1 US qt, 1.76 Imp qt)/131 milliseconds
Air fuel ratio 0.76 - 1.25

0.02-inch Diagnosis 

SECONDARY PARAMETERS REFERENCE

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 > 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 9.6 ←→54.4 (2.54 ←→14.37 US gal, 2.11 ←→12.00 Imp gal)
Intake manifold relative vacuum (relative pressure) < -8.0 kPa (-60 mmHg, -2.36 inHg)
Fuel tank pressure -0.43 - 1.43 kPa (-2.6 - 10.7 mmHg, -0.13 - 0.42 inHg)
Vehicle speed ≥ 50 km/h (1 MPH) continues for 125 seconds
Closed air/fuel ratio control In operation
Engine speed 500 - 6800 RPM
(During diagnosis)  
Change of fuel level ≤5 (1.3 US qt, 1.1 Imp qt)
Pressure change every one second < 0.06 kPa (0.44 mmHg, 0.02 inHg)
Minimum pressure change value every one second - < 0.07 kPa (0.51 mmHg, 0.02 inHg)
Maximum pressure change value every one second  
|Pressure change in tank every second| ≤0.01 kPa (0.75 mmHg, 0.03 inHg)
Atmospheric pressure change (Mode D) -0.47 ←→0.32 kPa (-3.5 ←→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)