All codes › P0101
P0101: Mass Air Flow Circuit Range/Performance
What it means
The mass air flow sensor reading is implausible compared to engine speed and load, though not totally dead.
Severity: Medium Hesitation and poor economy are typical; usually drivable.
Common causes
- Dirty MAF element
- Air leak between MAF and throttle
- Clogged air filter
- Aftermarket intake changing the airflow
Most common causes first. Exact causes vary by make, model and engine.
Can I fix it myself?
Often DIY. Spray the MAF with MAF-specific cleaner and replace the air filter first.
Repair cost
SEEDED ESTIMATE Roughly $80–$310
Most likely repair: mass air flow sensor. Diagnosis fees, taxes and other causes are not included.
| Line | Low | High | Basis |
|---|---|---|---|
| Mass air flow sensor | $64 | $226 | Typical listed retail range, source (one $568 outlier excluded) |
| Labor 0.2–0.5 hr | $20 | $80 | $100–$160/hr, shop survey |
⚠️ This is an editorial placeholder range for this type of repair. It is not based on real invoices or licensed pricing data yet. Real ranges will appear here once enough reader invoices for P0101 are verified.
Verified reader invoices for P0101: 0. Share your repair bill to help build real costs.
Tools that can read P0101
- ScanFixAI: Pro $29.99/mo or $249.99/yr
- OBDAI: Annual PRO bundle $299
- BlueDriver Pro Next-Gen: $119.95 list ($99.95 sale seen)
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