What Causes Sensor Failure?
2 Answers
The specific causes of sensor failure are as follows: 1. Fixed deviation failure mainly refers to a type of fault where the measured value of the sensor differs from the true value by a constant. The faulty measurement runs parallel to the fault-free measurement. 2. Drift failure is a type of fault where the difference between the sensor's measured value and the true value changes over time. The accuracy decreases, the sensor's measurement capability deteriorates, and the precision lowers. When the accuracy grade drops, the average value of the measurements does not change, but the variance of the measurements does. Relevant information is as follows: 1. A sensor is a device or apparatus that can sense a specified measured component and convert it into a usable signal according to a certain law. The output signal is generally an electrical quantity. It is usually composed of a sensitive element and a conversion element. 2. A sensor can sense the information of the measured object and transform the sensed information into an electrical signal or other required forms of information output according to a certain law, to meet the requirements of information transmission, processing, storage, display, recording, and control.
Sensor failures can be quite annoying, and I've seen many cases. Simply put, they're caused either by the sensor itself malfunctioning or external issues. The most common one is vibration loosening—for example, after driving on bumpy roads for a long time, the sensor connector comes loose, interrupting the signal. The second is moisture erosion, where water seeps in during car washes or from humid conditions during rainy drives, leading to corrosion and short circuits. The third is aging wear—over time, the internal components of the sensor degrade, reducing sensitivity and affecting readings. The fourth is circuit problems, such as aged or broken wiring or blown fuses cutting off power. The fifth is environmental factors, like sensors overheating and failing under high temperatures or dust clogging the sensing holes. Maintenance is crucial. I recommend regular checks, especially for older cars, to catch issues early and avoid breakdowns. You can use a diagnostic tool to read error codes yourself, but for complex issues, it's best to consult a professional mechanic.
