P0102 on BMW — Mass Air Flow Circuit Low Input
BMW
Verified1 source
1 source
- Official data (NHTSA)official_feed
What P0102 means
Caution — monitor closely
The ECU sees an abnormally low/absent signal from the MAF sensor — a circuit break or sensor failure.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Broken or corroded sensor wiring
What to check first
- Inspect MAF sensor wiring
- Check signal with a scan tool
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