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 MANUALSSUBARU2014OUTBACK 2.5I, STANDARD TRANSREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISDIAGNOSTIC TROUBLE CODE (DTC) DETECTING CRITERIA (H4DO)DIAGNOSTIC TROUBLE CODE (DTC) DETECTING CRITERIADTC P0171 SYSTEM TOO LEAN (BANK 1)ENABLE CONDITION
2014 Subaru Outback 2.5i, Standard Trans
Enable Condition
2014 Subaru Outback 2.5i, Standard TransSECTION Enable Condition
ENABLE CONDITIONS
| Secondary Parameters | Enable Conditions |
|---|---|
| A/F main learning system | In operation |
| Engine coolant temperature | ≥ 60 °C (140 °F) |
| Engine load change | < 0.02 g/rev (0 oz/rev) |
| Engine load | ≥ Value of Map 1 |
MAP 1 (AT MODEL)
| Engine speed (rpm) | Idling | 670 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500 | 4000 | 4500 |
| Measured value (g (oz)/rev) | na | 0.154 (0.01) | 0.158 (0.01) | 0.154 (0.01) | 0.163 (0.01) | 0.176 (0.01) | 0.19 (0.01) | 0.218 (0.01) | 0.229 (0.01) | 0.25 (0.01) |
MAP 1 (MT MODEL)
| Engine speed (rpm) | Idling | 650 | 1000 | 1500 | 2000 | 2500 | 3000 | 3500 | 4000 | 4500 |
| Measured value (g (oz)/rev) | na | 0.15 (0.01) | 0.16116 9 (0.01) | 0.15800 7 (0.01) | 0.14349 9 (0.01) | 0.15624 (0.01) | 0.16358 7 (0.01) | 0.18637 2 (0.01) | 0.19539 3 (0.01) | 0.21975 9 (0.01) |
RENDER: 1.0x
NO RELATED
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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.