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 MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 686 (ENGINE CONTROL SYSTEM (SFI) (3MZ-FE) - DIAGNOSTICS)DTC P0116: ENGINE COOLANT TEMPERATURE CIRCUIT RANGE/PERFORMANCE PROBLEMTYPICAL ENABLING CONDITIONS
2004 Toyota Matrix XR, FWD, Standard
Typical Enabling Conditions
2004 Toyota Matrix XR, FWD, StandardSECTION Typical Enabling Conditions
WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever the following DTCs are not present | P0100 to P0103: MAF meter |
ECT Sensor Stuck at Low ECT:
TYPICAL ENABLING CONDITIONS (ECT SENSOR STUCK AT LOW ECT)
| Cumulative idle off period | 250 seconds or more |
| Speed increase by 30 km/h (19 mph) or more | 10 times or more |
| ECT | 35 to 60°C (95 to 140°F) |
| IAT | -6.7°C (20°F) or more |
ECT Sensor Stuck at High ECT:
TYPICAL ENABLING CONDITIONS (ECT SENSOR STUCK AT HIGH ECT)
| ECT | 60 to 140°C (140 to 284°F) | ||
| IAT | -6.7°C (20°F) or more | ||
| "Stop and go"(1) | Once or more | ||
| "Steady driving and stop"(2) | Once or more | ||
| Engine running time after engine start | 0.3 seconds or more | ||
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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.