Engine Coolant Temperature Sensor Out of Range
The engine coolant temperature sensor reading is not within expected limits.
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What it means (plain English)
The engine coolant temperature sensor measures how hot the coolant is, but it's sending a signal that's too high or too low, usually due to a fault in the sensor or a wiring issue.
What the computer is actually seeing
The computer expects the coolant temperature to be between 180°F and 220°F (82°C and 104°C) during normal operation, but it sees values below 60°F (16°C) or above 275°F (135°C).
What a healthy reading looks like
Coolant temperature should be between 180°F and 220°F (82°C and 104°C) under normal operating conditions.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check coolant level in the reservoir; ensure it's at the proper level.
- 22. Inspect wiring and connectors at the coolant temperature sensor for damage or corrosion. Repair as necessary.
- 33. Using a scan tool, check the current engine coolant temperature value being reported. Compare it with the actual coolant temperature using a thermometer. If they differ significantly, suspect the sensor is faulty.
- 44. Replace the coolant temperature sensor if it is found to be defective or misreading, reconnect everything, and clear the code. Test drive the vehicle and check if the code returns.
Common causes
- Faulty coolant temperature sensor
- Wiring issues or bad connectors
- Coolant leaks affecting sensor operation
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity, so you can drive it, but keep an eye on temperature gauges. Overheating can cause damage.
Will this code come back after I clear it?
If the underlying issue is fixed, it shouldn't come back. If the fault isn’t resolved, it likely will reappear.
Why does this code pair with others like SPN 111 and SPN 113?
Those codes relate to related engine temperature issues, often indicating multiple sensor faults or wiring problems.
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