Below are list of Car sensors and their functions in the car

1. Oxygen Sensors: Simply put, oxygen sensors (also known as O2 sensors) monitor the amount of oxygen in the exhaust gas before and after it exits the tailpipe. These numbers are then relayed to the vehicle’s electronic control unit (ECU), which adjusts the air/fuel ratios, so the engine runs optimally.

2. Mass Airflow Sensor: The mass airflow sensor (or MAF sensor) is a key part of a vehicle’s fuel injection system and measures the volume of air entering the intake. This engine sensor’s readings get sent to the ECU to determine the amount of fuel to provide the engine for optimal combustion.

3. Engine Oil Level Sensor: Running out of motor oil can lead to extremely costly problems, like a blown head gasket or a seized engine. Thankfully, most modern cars have an engine oil level sensor to alert the driver via a dashboard warning when levels fall low.

4. Engine Oil Pressure Sensor: Most engines also feature an oil pressure sensor that alerts the ECU to display a dash warning light when the pressure goes outside the optimal range. Should pressure drop too far, parts of the engine may not receive enough oil, increasing the odds of harmful metal-on-metal contact.

5. Coolant Temperature Sensor: As its name implies, a coolant temperature sensor (CTS) keeps track of the temperature of the coolant/antifreeze mixture in the engine’s cooling system. A faulty CTS may send incorrect signals to the ECU, potentially causing the motor to overheat.

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