ITS AN OUT OF SPEC MASS AIRFLOW SENSOR. IT WILL STILL WORK OK JUST OPERATING OUT OF SPEC AT TIMES AS DETERMINED BY THE ECM. CLEAR THE CODE WITH A SCANNER ( ACTRON MAKES A GOOD CHEAP ONE ) IF IT COMES BACK, ITS CONFIRMED. DO NOT ATTEMPT TO CLEAN THE MAF, USLESS EXERCISE & IT MIGHT DESTROY THE MAF. MY 2006 X5 3.0 WAS RECENTLY REPAIRED BY THE DEALER UNDER WARRANTY. SAME CODES, SAME SYMPTOMS. REPLACED MAF, CLEARED THE CODES AND GOOD AS NEW. YOU DO NOT HAVE 2 CLEAR THE TROUBLE CODES AS THEY WILL CLEAR THEMSELVES ONCE THE CONDITION IS CORRECTED & THE VEHICLE IS OPERATED FOR A FEW DRIVE CYCLES ( NORMAL DRIVING ) HAPPY MOTORING..........FRANKIE P.