Where Are the Car Sensors Located?
2 Answers
Car sensors are generally located inside various components. For example, the tire pressure sensor is inside the car's wheels, the fuel sensor is inside the engine, and the coolant temperature sensor is inside the radiator. The oxygen sensor is an essential component for the engine to reduce exhaust pollution. It monitors the oxygen concentration in the exhaust and controls the fuel injection volume via feedback, thereby maintaining the air-fuel ratio of the mixture within the normal range. The oxygen sensor calculates the oxygen concentration based on chemical equilibrium to monitor the air-fuel ratio. Therefore, if the oxygen sensor fails, it cannot monitor the vehicle's exhaust emission values. At a certain temperature, high-concentration oxygen molecules inside the tube can be adsorbed to form electrons, creating a potential difference.
I often repair cars myself and find that the placement of sensors in various corners is crucial. The oxygen sensor is usually installed on the exhaust pipe, near the engine or the mid-section muffler, to detect exhaust concentration; the air intake flow sensor is located near the air intake to precisely measure incoming air; the coolant temperature sensor is fixed on the radiator or engine cover to monitor thermal conditions. The wheel speed sensor is placed close to the wheel bearings to measure speed and prevent skidding; there are also sensors like the airbag collision sensor, hidden behind the bumper or under the dashboard to ensure quick response during a collision. The positioning is meticulously designed to avoid data interference and extend lifespan. When I replaced an oxygen sensor before, improper positioning caused the emission warning light to come on, and it took repeated adjustments to fix it. The placement of multiple car sensors also affects fuel efficiency and environmental compliance—it's best to use diagnostic tools and manuals during repairs to avoid damaging components by forcing them apart. Keeping the sensor areas clean during daily driving is also important, as dust buildup can cause false alerts, especially in older cars, so it's essential to regularly inspect the engine bay. Overall, the layout from the front to the rear of the car integrates data to optimize the driving experience.
