P0102: Mass or Volume Air Flow Circuit Low Input
System: Air metering · Priority: medium
What P0102 means
The control module detected a condition matching the generic definition Mass or Volume Air Flow Circuit Low Input. A trouble code identifies what the module detected; it does not automatically identify the failed part.
Useful next checks
- Inspect MAF power, ground and signal wiring.
- Check for an unplugged or damaged MAF connector.
- Confirm the fault with live data before replacing the sensor.
Why vehicle context matters
The same generic code can have different diagnostic paths depending on engine, calibration, wiring layout, service bulletins and related codes. Freeze-frame and live data can help establish when the fault occurred.
Need a scanner for P0102?
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