P0102: MAF Low Input — What It Means
Key Takeaway
P0102 = MAF sensor reading too low. Usually a wiring or sensor issue.
Common Causes
| Cause | Fix |
|---|---|
| MAF sensor connector loose | Reseat connector |
| Wiring damage to MAF | Repair wiring |
| MAF sensor failed (low output) | Replace sensor |
| Air intake restriction | Check for blocked filter or collapsed hose |
| PCM/ECM issue | Rare — check after other causes |
P0102 vs P0101
| Code | Meaning |
|---|---|
| P0101 | MAF readings outside range (too high or too low) |
| P0102 | MAF specifically reading too low |
| P0103 | MAF specifically reading too high |
ProHow Steer Helps
Steer identifies the specific MAF code and monitors airflow data to help diagnose.
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