OBD-II code guide
P0102 Mass Airflow Circuit Low Input
P0102 means the mass airflow sensor signal is lower than expected.
What it means
The computer sees too little airflow signal for the current engine condition.
Common symptoms
- Hesitation
- Stalling
- Rough idle
- Poor acceleration
- Check engine light
Likely causes
- Unplugged MAF sensor
- Dirty sensor
- Damaged wiring
- Air leak after sensor
- Faulty sensor
First checks
- Inspect the MAF connector.
- Look for intake tubes left loose after service.
- Check air filter installation.
- Compare live airflow data if available.