E46Fanatics - View Single Post - Help! Replaced O2 sensors still have CEL???
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Old 04-24-2009, 07:52 PM   #33
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Join Date: Aug 2005
Location: Jacksonville,Fl
Posts: 325
My Ride: 2003 330i
Oh.... and something that triggered a bunch of codes last weekend. Check the rubber vacuum line on the fuel filter (regulator side). Mine was almost corroded in two. It connects from the fuel filter to the 1st intake boot. I never thought about that line while replacing the others and when this happened it starved the engine of fuel. Simple and cheap fix!!!!!!!

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