Quote:
Originally Posted by Dackelone
I would start with replacing your spark plugs & maybe your coil packs. The plugs should be changed every 45K miles( or every 25K when running a tune). The coil packs seem to go bad around 90K. Make sure to use BMW dealer bought plugs. Some guys have had "issues" with aftermarket plugs.
After all of that... it might just end up being carbon buildup. That happens about every 50K miles. More so on the N54's than N55's.
Good Luck,
Dackel
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P0012 is a timing code, it's most definitely vanos related. I just took out the intake side and cleaned it up, if it doesn't help I'll swap a new unit in.