Cons… some techs if they don’t find a code … don’t know where to look or what to do …
I don’t think it’s a fault of a system that often gives clear code that often points to the part that needs replacing.
Besides OBD1 and all manifacturer specific scan tools were already there. So without OBD2 we would have even more expensive scan tools only for the single make. And maybe manufacturers would even make them in a way that they don’t even actually allow you to diagnose a problem. Just tell you what part (they think) you should replace without giving any code setting criteria etc.
Unfortunately we are again already heading that way…
I don’t think it’s a fault of a system that often gives clear code that often points to the part that needs replacing.
Besides OBD1 and all manifacturer specific scan tools were already there. So without OBD2 we would have even more expensive scan tools only for the single make. And maybe manufacturers would even make them in a way that they don’t even actually allow you to diagnose a problem. Just tell you what part (they think) you should replace without giving any code setting criteria etc.
Unfortunately we are again already heading that way…