P0103 on BMW — Mass Air Flow Circuit High Input
BMW
Verified1 source
1 source
- Official data (NHTSA)official_feed
What P0103 means
Caution — monitor closely
The ECU sees an abnormally high signal from the MAF sensor.
Driveability assessment not yet available. Get a personalized AI Second Opinion for your exact car.
General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Short circuit in the sensor wiring
What to check first
- Check sensor signal with a scan tool
- Inspect wiring for shorts
Cost data coming soonUpload your estimate to check if the price is fair