Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU2007OUTBACK LIMITED, 4D WAGON, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMDIAGNOSTIC TROUBLE CODE (DTC) DETECTING CRITERIA (H4SO)DIAGNOSTIC TROUBLE CODE (DTC) DETECTING CRITERIADTC P0442 EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (SMALL LEAK)ENABLE CONDITION4-INCH DIAGNOSIS
2007 Subaru Outback Limited, 4D Wagon, Automatic
4-inch Diagnosis
2007 Subaru Outback Limited, 4D Wagon, AutomaticSECTION 4-inch Diagnosis
ENABLE CONDITION
| 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 | 9.6 - 54.4 l (2.54 - 14.37 US gal, 2.11 - 11.97 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 l /128 milliseconds (0.53 US gal/128 milliseconds, 0.44 Imp gal/128 milliseconds) |
| Air fuel ratio | 0.76 - 1.25 |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.