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What is a vehicle trouble code?

1Answers
SanGenesis
07/24/2025, 09:34:44 AM

Vehicle trouble codes are data codes generated by the car's computer ECU after analyzing a fault. Generally, these codes are caused by sensor malfunctions or poor sensor performance, but some mechanical faults cannot be read by the ECU. When an issue occurs in the car engine, a diagnostic tool will display the trouble code, allowing mechanics to accurately identify the faulty component for repair. During vehicle development, there is a growing trend toward intelligence, mechanization, and automation. In automated control, it is essential for the control unit to autonomously assess the status of surrounding components and the environment and quickly execute corresponding functions. Control is a comprehensive decision-making process. Trouble codes are mandatory conditions in the control logic, used to determine whether certain functions meet control criteria. If not, the function is canceled or restricted, while providing an alternative signal as a backup.

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