What does onboard OBD mean?
2 Answers
Onboard OBD is the On-Board Diagnostics system, which functions to: 1. Locate and describe faults in specific components for easier maintenance; 2. Alert when faults cause excessive emissions, indicating increased environmental pollution. OBD includes: 1. EGR; 2. Engine; 3. Particulate filter; 4. Catalytic converter; 5. Oxygen sensor; 6. Emission control system; 7. Fuel system. OBD working principle: When an emission fault occurs, the ECU records fault information and related codes, then notifies the driver via the malfunction indicator lamp or check engine light.
Hey, I found that the car's OBD is actually quite easy to understand. I'm just an ordinary driver who's always on the road. One time, my car suddenly lit up a warning light, and the mechanic fixed it by plugging in a small device. That's when I learned about the OBD port. OBD stands for On-Board Diagnostics, and in Chinese, it's called the onboard diagnostic system. Simply put, it's like a little computer helper built into the car that monitors various parameters. The port is usually located near the steering wheel. When connected to a scan tool during repairs, it can read fault codes, such as P0171 indicating an air-fuel ratio issue. It also tracks real-time information: whether emissions exceed standards, fuel consumption, engine temperature, etc., which is crucial for keeping the car healthy. Later, I bought a Bluetooth OBD adapter myself. By connecting it to my phone via an app, I can view data streams like average speed and fuel consumption history, and even predict maintenance schedules. This thing has been a huge help, saving me repair costs and hassle while also promoting environmental protection. I recommend all car owners get familiar with it, especially for older cars—regular checks can prevent major issues and extend the vehicle's lifespan.
