BMW 3 Series MAF Sensor Failure — Rough Running Poor Economy
BMW
3 Series
2005
N52/N54/N47
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MAF sensor contamination on BMW 3 Series causes incorrect air mass readings, leading to poor fuel economy, hesitation and rough running. P0100/P0101/P0102 stored. Clean with MAF cleaner spray before replacing. Cleaning costs £5-10; replacement sensor £80-200.
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