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| Document title： | WHAT IS OBD? |
| Release time： | 2020-12-22 15:45:16 |
| The document overview： | OBD stands for O n- B oard D iagnostics. It is a computer-based system originally designed to reduce emissions by monitoring the performance of major engine components. A basic OBD system consists of an ECU (Electronic Control Unit), which uses input |