What does it mean when a car displays 'code'?

[SanJeremiah]

Car 'code' indicates the need for an indicator light (malfunction light) self-check. When the self-check button is pressed, all indicator lights on the dashboard illuminate, showing that all indicator lights can normally report malfunction conditions. Below is an introduction related to car 'code': 1. 'Code' has a specific technical meaning and a general meaning. Technically, 'code' refers to replacing a word or phrase with another word, number, or symbol to hide the original word or phrase, primarily serving a substitution role. 2. Car 'code' refers to the car detection chip. If the chip cannot be detected, the dashboard light will turn on. When this light is on, the car cannot start, and attempting to ignite multiple times may lock the engine, commonly known as engine anti-theft.