P0101 Mass or Volume Air Flow Circuit Range/Performance
The MAF reading does not make sense compared with other sensors such as throttle position and engine speed.
Common causes
- Dirty MAF sensor element
- Intake air leak
- Clogged air filter
- Faulty MAF sensor
Symptoms
- Check engine light
- Hesitation on acceleration
- Lean or rich running
What to check
- Replace a dirty air filter
- Clean the MAF element with dedicated cleaner
- Check intake hoses for cracks
- Compare grams per second with the expected value at idle
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0101, follow the service information for that make and model.
Related codes
- P0100 Mass or Volume Air Flow Circuit
- P0102 Mass or Volume Air Flow Circuit Low Input
- P0103 Mass or Volume Air Flow Circuit High Input
- P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance
- P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
- P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input