What Sensors Does a Vehicle Have?
2 Answers
Vehicles are equipped with the following sensors: 1. Oxygen Sensor: When the oxygen sensor fails, the ECU cannot obtain this information and thus cannot determine if the amount of injected gasoline is correct. An improper air-fuel ratio can lead to reduced engine power and increased emissions. 2. Wheel Speed Sensor: Primarily collects the vehicle's speed to detect any signs of wheel slip. Therefore, a dedicated sensor is used to gather wheel speed data, typically installed on each wheel's hub. If the sensor is damaged, the ABS will fail. 3. Coolant Temperature Sensor: If the coolant temperature sensor malfunctions, it may display the temperature signal of a warm engine during a cold start. The ECU cannot receive the correct signal and may supply a leaner air-fuel mixture, making it difficult to start the engine when cold. This can also lead to unstable idle operation and insufficient acceleration power. 4. Electronic Throttle Pedal Position Sensor: When this sensor fails, the ECU cannot detect the throttle position signal or determine the correct pedal position, resulting in weak engine acceleration or even the inability to accelerate. 5. Intake Pressure Sensor: As the name suggests, this sensor detects changes in resistance and pressure corresponding to different engine speeds and loads, converting them into voltage signals for the ECU to adjust fuel injection and ignition timing. It is usually installed near the throttle body. A malfunction can cause issues such as difficulty starting, unstable idle, and weak acceleration.
As a veteran driver with decades of experience, the sensors in a vehicle are like its nose and ears, omnipresent. The most common is the oxygen sensor, which monitors exhaust emissions to help reduce pollution; the temperature sensor near the engine ensures it doesn't overheat or blow a gasket; the speed sensor on the wheels informs the ECU of the vehicle's speed to control the ABS system. When driving, if a sensor fails and the dashboard light comes on, it's crucial to fix it promptly to avoid skyrocketing fuel consumption or brake failure. Parking sensors on the rear bumper beep when reversing to prevent collisions. Regular maintenance checks on these little components can save a lot of hassle and money, extending the vehicle's lifespan.
