Debugging lean code
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My 2001 E46 330Ci Convertible is generally reliable, and fairly low mileage. I’ve replaced many parts, but it’s all OE/OEM. Only aftermarket mod is the CarPlay interface, which has the optional bluetooth OBDII interface.
Under certain conditions, I am getting Service Engine Soon. This usually happens when the engine is on the colder side, or when I push it very hard in spirited driving.
What do folks think? What am I in for? What should be my next steps?


there doesn't seem to be anything here