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.
2006 Scion tC StandardFACTORY OEM SERVICE PROCEDURE
Monitor Strategy
MONITOR STRATEGY
| Related DTCs | P0125: Insufficient engine coolant temperature for closed-loop fuel control |
| Required Sensors/Components (Main) | Thermostat, cooling system |
| Required Sensors/Components (Related) | Engine coolant temperature sensor and mass air flow meter |
| Frequency of Operation | Once per driving cycle |
| Duration | 72 seconds: Engine start ECT is -8.34°C (17°F) or more 123 seconds: Engine start ECT is -19.45 to -8.34°C (-3 to 17°F) 20 minutes: Engine start ECT is less than -19.45°C (-3°F) |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |
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.