Can a diesel car still be driven if the OBD light is on?

1 Answers
MacAvery
07/24/25 7:08pm
Generally, when the OBD light in a diesel vehicle illuminates, it indicates that the vehicle's exhaust emissions are exceeding the standard. It can still be driven, but repairs should be carried out as soon as possible. Below is relevant information: OBD: OBD, as an abbreviation for a proprietary term, stands for On-Board Diagnostics in Chinese. This system can monitor the working conditions of the engine's electronic control system and other functional modules of the vehicle in real-time during operation. If any abnormal conditions are detected, it determines the specific fault based on specific algorithms and stores the diagnostic trouble codes in the system's memory. Function of OBD: The useful information obtained after system self-diagnosis can assist in vehicle maintenance and repairs. Technicians can use the manufacturer's specialized equipment to read the fault codes, enabling quick fault localization for vehicle repairs and reducing the time required for manual diagnosis.
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