It is said to be the most stringent annual review in history. How sad is the OBD test that even the scalper panicked?

The country has always been very strict about the emission of motor vehicle exhaust, and the national fifth emission was fully implemented in China from 17. However, in August of 19, the national six emissions have been on the ground for one month. In addition to the efforts of new car manufacturers to reduce emissions, people who like used cars in China are also having a hard time. The stricter annual inspection regulations were formally implemented on May 1 this year, and the on-board diagnostic system (OBD) inspection items were added on May 1 1. OBD is the abbreviation of English On-Board Diagnostics, and Chinese translation is "on-board automatic diagnostics system". This system will monitor whether the automobile exhaust exceeds the standard at any time from the running condition of the engine, and once it exceeds the standard, it will immediately issue a warning. To put it simply: we know that every car now has an engine computer, which can record all kinds of information about the car. If the car breaks down, when we run to the 4S shop, we can find out where the "fault code" appears.

We can also understand the OBD interface of the car as the USB interface of the computer, so as long as you plug in the OBD during the annual review, you can find out the data and parameters of your engine operation and the fault code reported by the vehicle. So, if the DMV finds that your computer has abnormal data history or fault code, congratulations, you can go home and repair it and come back next time. Simply put, OBD detection is mainly divided into two parts: OBD detection and exhaust pollutant detection (OBD continuous). In the first part, if the vehicle has a fault light or detects a fault code, it will not pass the OBD test. Therefore, some old luxury cars, such as Jaguar Land Rover, can scan dozens or even dozens of fault codes, so these car owners should be careful.

In the second part of tail gas detection, it is also necessary to connect OBD to read real-time data and carry out dynamic monitoring in the whole process. Therefore, the previous behavior of passing the exhaust gas detection by modifying the engine data will be completely eliminated. In other words, it's hard for an old car with unqualified exhaust to cheat again. It can also be said that the new annual inspection regulations are to minimize the influence of human factors, put an end to cheating in the annual inspection process, and directly let real-time computer data judge. It is worth mentioning that OBD testing is not grouped by year, but a unified limit for vehicles produced after July 1 1.

Therefore, the new regulations are stricter on old cars, and the old owners are even more uncomfortable. Therefore, old owners should pay more attention to the maintenance of vehicles, especially the maintenance of engines and three-way catalytic converters. What should I do if my car is too old without OBD? Yes, although OBD has become the standard of major car companies in the United States, Japan and Europe in the 1980s, and the more advanced OBD-II was introduced in the 1990s, the domestic situation is completely different. On the one hand, due to cost considerations, on the other hand, in order to avoid the trouble caused by OBD alarm when the oil quality is not up to standard, many joint venture brands often reduce or close OBD after domestic production.