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What does automotive OBD detection mean?

1 Answers

Winter

07/25/25 2:55am

Automotive OBD detection refers to the 'On-Board Diagnostics' system. The OBD system primarily monitors the operating status of the engine and the exhaust treatment system in real-time. Once there are faults or abnormal data in the engine and exhaust treatment system, the OBD system will store the fault codes and illuminate the malfunction indicator light, such as abnormal engine operation or excessive exhaust emissions. The OBD system generally requires the configuration of hardware like heated oxygen sensors or a 16-pin diagnostic interface. When abnormalities occur in the engine and exhaust treatment system, the OBD system not only promptly alerts the driver but also facilitates maintenance personnel in troubleshooting. This is because technicians can locate the approximate position of the fault through the PCM codes in the OBD system, significantly reducing the time required for fault diagnosis.

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