Engine Coolant Temperature Sensor (ECT) is a sensor that is used to determine the temperature of the engine coolant.

As with any other component in your car, the engine coolant temperature Sensor can go bad over time and fall into disrepair. This can cause a range of problems, including overheating the engine.

If you know where the engine sensor is and what it looks like, you can conduct a visual inspection. While this visual check can be helpful, it won’t help you diagnose every possible problem as some sensor malfunctions can present without visual evidence.

Generally speaking, if your sensor is not working, it will send a signal to the computer and your Check Engine light will be illuminated.

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The (ECT) sensor, also known as the (ECT) switch, is an engine management system sensor. Most (ECT) sensors operate using electrical resistance to measure the temperature. The computer will also scale back engine performance settings if it detects that the engine temperature is too high.

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