Hi all,
I'd always thought that a car with ODB2 had no way to extract the codes manually, ie by turning a screw on the ECU like I can do with my 94 Altima.. But a couple of times now I've read about people doing the same thing with their newer Nissans. Is this a Nissan-specific ability, or do most ODBII cars have this feature as well? I'm looking to upgrade to a 98 or newer if the right car comes along, so not being able to read the codes was something I was going to miss with the newer system.
I guess if the scanner-less method of getting the codes is still available, then an ODBII scanner's main advantage would be getting into the details of timing, air/fuel mixture and all that good stuff. Correct?