What is an OBD Fault?
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An OBD fault refers to a malfunction in the On-Board Diagnostics system. Below is an introduction to OBD: 1. Concept: OBD, short for On-Board Diagnostics, is a vehicle fault diagnosis and detection system. 2. Structural Features: Its key feature is the retention of an OBD port, which connects to a diagnostic tool to read data from the vehicle's ECU (Engine Control Unit). 3. Function: This system can read data related to the engine fuel system, emission control system, oxygen sensors, catalytic converter, electronic control system, and transmission, among other core components. 4. Interface Design: The OBD interface typically consists of a 16-pin female connector in a trapezoidal shape. Some vehicle models may have a protective cover over the OBD port, and common interface colors include black, white, or blue.