obd ii - What is the difference between OBD1 and OBD2? - Motor Vehicle Maintenance & Repair Stack Exchange

In my car (BMW E46 323I 1998) I have both connectors, that is, the 20-pin OBD1 and the OBD2, what is the difference between the two, I am referring rather to the functionality in my car, that is .

ionic3 - Sending command to OBDII using Ionic 3 native bluetooth plugin - Stack Overflow

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