dmax · #4 · Aug 18, 2021. If you originally replaced MAF because you got a MAF code, it honestly is usually an air leak. Smoke test your car, and/or look for broken/cracked vacuum linesand the lower intake boot elbow 'always' cracksso if going down to look, you might as well get a new one for $12 and replace itand then clean the icv As well as the obvious 000008 - DME signal air mass flow sensor (since it was unplugged) A forum community dedicated to BMW E46, E90, and F30 owners and Mass Air Flow Sensor. good electrical types always cap these off but bmw and merc leave many open even E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999 Mass Air Flow Sensor Mass Air Flow Sensor Mass Air Flow Sensor Mass Air Flow Sensor Mass Air Flow Sensor Mass Air Flow Sensor Mass Air Flow Sensor Saturn Astra 09-08 BMW 323i 07-06; 325i 2006; 325xi 2006; 330i 2006; 330xi 2006; 525i 07-04; 525xi 07-06; 530i 07-04; 530xi 07-06; 535i 13-11; Z4 08-06 From the wiring diagrams I came up with the following: S50b32 Mass Air Flow Sensor. #1 pin on MAF (BR/OR wire) to Ground. #2 pin on MAF (GR/BL wire) to 41 on X6000 DME -> Signal HFM. #3 pin on MAF (RT/WS wire) to Voltage Supply. #4 pin on MAF (GR/WS wire) to 14 on X6000 DME -> Ground HFM. S54 Mass Air Flow Sensor. . It’s quite possible that the mass air flow sensor is either contaminated or faulty. However, it’s not the only potential problem you are facing. Here are some of the most common P0102 causes. Dirty or faulty mass air flow sensor. Intake air leaks. MAF sensor wiring problem. Dirty air filter. Faulty PCM (unusual) The most common signs of bad mass air flow sensor (MAF) in Mini are loss of power or slow acceleration, engine hesitation or jerking during acceleration, erratic idling, misfires, poor exhaust emission values and sometimes black smoke comes out of the tailpipe. The mass air flow sensor is part of the engine’s intake system and is located 103 posts · Joined 2008. #9 · Oct 23, 2008. MAF Sensor. Might want to check the hoses that lead off the MAF, the elbows (which run right after the MAF to the intake for cracks. Also check next to air pump which is on opposite side of MAF (passenger side) to check for cracks. All were cracked on my car and had to be replaced. From the wiring diagrams I came up with the following: S50b32 Mass Air Flow Sensor. #1 pin on MAF (BR/OR wire) to Ground. #2 pin on MAF (GR/BL wire) to 41 on X6000 DME -> Signal HFM. #3 pin on MAF (RT/WS wire) to Voltage Supply. #4 pin on MAF (GR/WS wire) to 14 on X6000 DME -> Ground HFM. S54 Mass Air Flow Sensor. Carefully remove the sensor from the air duct and disconnect the electrical connector. Spray 10 to 15 spurts of the mass air flower cleaner onto the wire or plate. Don’t scrub the parts; you may break the wire or damage the plate. Allow the MAF sensor to dry completely before reinstalling it in the air duct.

bmw e46 mass air flow sensor problems