I will say that it would be a tremendous pain to disconnect the check engine light. If you ever took it to another dealer and had it fixed they would get busted and it just would not be worth the effort it takes to dis-connect the CEL.
However, I am not saying it does not happen. Is this some long on-going fued over getting something fixed that has gone on so long that it might get to that point?
I don't know for sure if a scanner would pick up a CEL, but I have seen some that do. Even this is not always 100%. That is why I mentioned the actual visual inspection of the connector. It can be dis-connected elsewhere, but with the same trouble as per the number of connectors that would have to be dis-connected. When these start getting pulled off, things start going wrong with engine performance.
Wednesday, December 7th, 2011 AT 6:27 PM