I'd assume they meant OBD3 http://straighttalkautomotive.com/articles/have-you-heard-of-%20obd-iii.html http://straighttalkautomotive.com/articles/have-you-hea

I'd assume they meant OBD3 http://straighttalkautomotive.com/articles/have-you-heard-of-%20obd-iii.html http://straighttalkautomotive.com/articles/have-you-heard-of... It's mostly about surfacing the codes via a screen in the car instead of having a generic check engine light and needing an external scanner. As far as I can tell, it was never mandated. Most posts about it are from ~2011.