Originally Posted by upallnight

I use BMW Scanner 1.4 to read codes. It's about $40.00 bucks on the net and you will need a laptop or desktop. If you have the round 20pins connector in the engine compartment, you will need to get a cable adapter. Some codes can only be read from the round 20 pins connector, perhaps that is why the other code reader wasn't able to read the code. What year is your X ?