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Home >> Subaru >> 2011 >> Legacy Premium, Automatic CVT >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0442 Evaporative Emission Control System Leak Detected (Small Leak) >> Enable Condition >> 2-inch Diagnosis

2-inch Diagnosis

WARNING: This page is about a different variant/trim than selected.
Secondary Parameters Enable Conditions
At starting a diagnosis   
Evap. diagnosis Incomplete
Battery voltage ≥ 10.9 V
Atmospheric pressure ≥ 75 kPa (563 mmHg, 22.2 inHg)
Time since last incomplete 0.02-inch leakage diagnosis  
When cancelling in mode A > 120000 ms
When cancelling in other than mode A > 240000 ms
Total time of canister purge operation ≥ 120000 ms
Elapsed time after starting the engine ≥ 120 s
Fuel temperature -10 °C (14 °F) - 55 °C (131 °F)
Continuous time of the status where fuel level is 10.5 (2.77 US gal, 2.31 Imp gal) - 59.5 (15.72 US gal, 13.09 Imp gal) ≤ 37000 ms
Intake manifold relative vacuum (relative pressure) ≥ - 13.3 kPa (- 100 mmHg, - 3.9 inHg)
Fuel tank pressure -0.7 kPa (-5 mmHg, -0.2 inHg) - 1.4 kPa (10.7 mmHg, 0.4 inHg)
Closed air/fuel ratio control In operation
Engine speed 1050 RPM - 4000 RPM
Vehicle speed Continue the status of 50 km/h (31.1 MPH) - 510 km/h (316.9 MPH) for 125000 ms or more.
During diagnosis   
Change of fuel level ≤ Value of Map 7
Pressure change every 1 second < 0.1 kPa (0.44 mmHg, 0 inHg)
Minimum pressure change value every one second - Maximum pressure change value every one second < 0.1 kPa (0.51 mmHg, 0 inHg) (Mode D)
| Tank pressure change every 1 second | ≤ 0.1 kPa (0.75 mmHg, 0 inHg)
Barometric pressure change -0.5 kPa (-3.6 mmHg, -0.1 inHg) - 0.3 kPa (2.4 mmHg, 0.1 inHg) (Mode D)
  -0.3 kPa (-2.4 mmHg, -0.1 inHg) - 0.3 kPa (2.4 mmHg, 0.1 inHg) (Mode E)
MAP 7 REFERENCE CHART

Fuel level ( , US gal, Imp gal) 10, 2.64, 2.2 20, 5.28, 4.4 25, 6.61, 5.5 30, 7.93, 6.6 43, 11.36, 9.46 45, 11.89, 9.9 50, 13.21, 11 60, 15.85, 13.2
Change ( , US gal, Imp gal) 4, 1.06, 0.88 5, 1.32, 1.1 6.5, 1.72, 1.43 4, 1.06, 0.88 5, 1.32, 1.1 5, 1.32, 1.1 6, 1.59, 1.32 8, 2.11, 1.76