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Obd connector not working

3K views 2 replies 3 participants last post by  s7000 
#1 ·
I own a 1999 740i and the obd connector is not working and the car won't pass state inpection because of it, can somone help me out in solving this problem?
 
#2 ·
had the same problem on my 5er, under the hood there is a round 20 pin connector. it was a little lose, i went out, poped the hood and turned it until it was tight. got my scanner all was good.
 
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