Why does the yellow exclamation mark light in the car come on for a while and then disappear?

1 Answers
Keegan
07/30/25 9:19am
The reason why the yellow exclamation mark light in the car comes on for a while and then disappears may be an intermittent fault, most likely due to an issue with the oxygen sensor. Below is an introduction to automotive sensors: 1. Introduction: Automotive sensors are input devices for the car's computer system. 2. Function: They convert various operating conditions of the car (such as speed, temperature of various mediums, engine operating conditions, etc.) into electrical signals and transmit them to the computer to ensure the engine operates in the best condition. 3. Definition: When troubleshooting faults related to automotive sensors, in addition to checking the sensor itself, it is also necessary to inspect the wiring harness, connectors, and related circuits between the sensor and the electronic control unit.
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