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Old 01-03-2013, 02:17 PM   #16
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Join Date: Mar 2006
Location: San Francisco
Posts: 713
My Ride: E46 99' 328i
Fuse #43(5A) is on-board diagnose II, if the fuse has black stuff or burnt mark on it, it means the circuit has excessive current or the fuse just deteriorates to the point that limited the current to the on board diagnose II, thus caused the malfunction that you have, just replace the fuse and eliminate the cause is the easiest thing to do.
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