ऑन-बोर्ड डायग्नोस्टिक्स, OBD2, is a 'higher layer protocol' (like a language). CAN is a method of communication. In particular, the OBD2 standard विनिर्दिष्टता the OBD2 कनेक्टर, a set of 5 protocols. आगे, चूंकि 2008, the CAN bus (ISO 15765) has the अनिवार्य protocol for OBD2 in all cars.
