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.
2013 Subaru TribecaFACTORY OEM SERVICE PROCEDURE
Drive Cycle B
| DTC | Item | Condition |
|---|---|---|
| *P0171 | System Too Lean (Bank 1) | Complete diagnosis with drive cycle A or C as well. |
| *P0172 | System Too Rich (Bank 1) | Complete diagnosis with drive cycle A or C as well. |
| *P0174 | System Too Lean (Bank 2) | Complete diagnosis with drive cycle A or C as well. |
| *P0175 | System Too Rich (Bank 2) | Complete diagnosis with drive cycle A or C as well. |
| *P0300 | Random/Multiple Cylinder Misfire Detected | Complete diagnosis with drive cycle A or C as well. |
| *P0301 | Cylinder 1 Misfire Detected | Complete diagnosis with drive cycle A or C as well. |
| *P0302 | Cylinder 2 Misfire Detected | Complete diagnosis with drive cycle A or C as well. |
| *P0303 | Cylinder 3 Misfire Detected | Complete diagnosis with drive cycle A or C as well. |
| *P0304 | Cylinder 4 Misfire Detected | Complete diagnosis with drive cycle A or C as well. |
| *P0305 | Cylinder 5 Misfire Detected | Complete diagnosis with drive cycle A or C as well. |
| *P0306 | Cylinder 6 Misfire Detected | Complete diagnosis with drive cycle A or C as well. |
| *P0506 | Idle Air Control System RPM Lower Than Expected | - |
| *P0507 | Idle Air Control System RPM Higher Than Expected | - |
| *P2096 | Post Catalyst Fuel Trim System Too Lean (Bank 1) | Complete diagnosis with drive cycle A or C as well. |
| *P2097 | Post Catalyst Fuel Trim System Too Rich (Bank 1) | Complete diagnosis with drive cycle A or C as well. |
| *P2098 | Post Catalyst Fuel Trim System Too Lean Bank 2 | Complete diagnosis with drive cycle A or C as well. |
| *P2099 | Post Catalyst Fuel Trim System Too Rich Bank 2 | Complete diagnosis with drive cycle A or C as well. |
| *P219A | Bank 1 Air-Fuel Ratio Imbalance | Complete diagnosis with drive cycle C as well. |
| *P219B | Bank 2 Air-Fuel Ratio Imbalance | Complete diagnosis with drive cycle C as well. |
Factory Service Tools
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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.
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