Obd2 can't find a bare wire. The internet is full of doubting Thomases. It gives people a license to talk about things they've never done.
You're being pedantic. No, OBD2 can't tell you exactly which wire is corroded or shorted, but it can tell you exactly which subsystem is throwing errors or non-standard codes, which tells you where to look for issues.
It's the same as saying eventvwr can't tell you which piece of hardware is failing. Of course it can't, but it will tell you what piece of hardware to look at and test, rather than running every single diagnostic possible in the hopes of finding the fault via the scattergun approach.
In the end there's no substitute for a set of hands and a pair of eyes yes?
Of course not, but diagnostic tools greatly shorten the amount of effort and time required to solve any given problem. Without OBD2 OP's repair may have cost three grand or more.
(post is archived)