OBD的核心聚焦于"排放"，其诊断范畴严格限定在与车辆排放性能直接相关的系统与部件上，涵盖发动机动力总成、排放后处理系统、燃油蒸发控制系统等关键板块。以发动机为例，OBD实时监测发动机的燃烧效率、尾气排放成分，一旦发现一氧化碳（CO）、碳氢化合物（HC）、氮氧化合物（NOx）等污染物排放超标，便迅速记录故障信息，点亮仪表盘上的"发动机故障指示灯"（MIL），提醒驾驶员车辆存在排放问题，需及时检修。

Cars are more than just oil and steel. Modern models have incorporated electronics and computer chips to help manage and optimize their mechanical components. That means maintaining your car's ...

We've compiled a list of some of the best OBD2 diagnostic scanners describing their features, specifications, compatibility, and benefits. The automotive industry has a huge variety of OBD2 scanners ...

In the Last diagnostics article, we outlined how to retrieve and decipher engine diagnostics for engines running OBD-I engine management computers. OBD or On Board Diagnostics is a subsystem of the ...

[Justin] tipped us about his slick custom OBD-II gauge that could easily pass for an OEM module. He was able to use the clock area of his Subaru BRZ to display a bunch of information including the oil ...

Nobody likes seeing a warning light on their dashboard, and it’s even worse if you don’t know what it means. But most cars keep a record of any malfunction in their onboard computer, and you can ...

Whether you are a full time mechanic, or just a hobbyist, keeping track of all the different OBD-II codes for various vehicles is a nearly impossible task, and while not everyone wants to keep their ...

ADESA announced Tuesday it has added OBD2 emissions codes to the condition reports of vehicles inspected at its locations. The auction company has streamlined OBD2 (onboard diagnostic II) scans ...

In today’s wholesale automotive marketplace, transparency and trust are the driving forces behind stronger transactions. With vehicles often sold sight-unseen ...

Android Auto and CarPlay are becoming more useful and advanced, especially as Google and Apple open up the two platforms to more software categories. This time, the driving task category added to the ...

Have you ever looked under your car's steering wheel at all the wires, fuses, and plugs? If so, you might find an odd plug called an OBD-II port. That's the same port any technician uses during a smog ...