What is onboard vehicle diagnostics

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Onboard vehicle diagnostics refer to the system in a vehicle that monitors and reports on the health and performance of various components.

Onboard vehicle diagnostics use sensors and software to monitor the engine, transmission, brakes, and other systems for issues or malfunctions.
The system can alert the driver to potential problems through warning lights on the dashboard or by providing error codes that can be read using a diagnostic tool.
Onboard vehicle diagnostics can help identify issues early, prevent breakdowns, and improve overall vehicle performance.
Examples of onboard vehicle diagnostics systems include OBD-II (On-Board Diagnostics II) in modern cars and trucks.
Technicians can use diagnostic tools to access the onboard vehicle diagnostics system and troubleshoot problems.