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.
Typical Enabling Conditions
2009 Toyota Yaris S, 4D HatchbackSECTION Typical Enabling Conditions
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever following DTCs not present | None |
| Throttle position (TP sensor voltage) | 0.24 V or more |
| Engine | Running |
| Battery voltage | 10.5 V or more |
| Engine coolant temperature | 70°C (158°F) or more |
| IAT sensor circuit (P0110, P0112, P0113) | OK |
| ECT sensor circuit (P0115, P0117, P0118) | OK |
| CKP sensor circuit (P0335) | OK |
| TP sensor circuit (P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135) | OK |
| Canister pressure sensor circuit (P0450, P0452, P0453) | OK |
| EVAP leak detection pump (P2401, P2402) | OK |
| EVAP vent valve (P2419, P2420) | OK |
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.