I had my 93 SHO at the mechanics for some maintenance and I asked him to check codes. He hooked up his code reader and it couldn't read codes from my car. Is this a case of a bad wire somewhere? Is there something that commonly causes this issue? Any advise on where to start would be much appreciated. Also, I'm considering getting my own code reader. Any advise on what works well without breaking the bank?
Thanks in advance.
Thanks in advance.