Glossary
OBD (On-Board Diagnostics)
OBD (On-Board Diagnostics) is the standard system built into modern vehicles that reports fault codes and performance data, typically accessed via a port under the dashboard.
Every modern vehicle has an OBD port that allows diagnostic tools — from handheld code readers to permanently fitted telematics dongles — to read fault codes and live performance data directly from the vehicle's computer.
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