P0102 Mass or Volume Air Flow Circuit Low Input
The MAF signal voltage or frequency is lower than expected.
Common causes
- Open signal wire
- Poor connector contact
- Faulty MAF sensor
- Large air leak
Symptoms
- Check engine light
- Stalling
- Poor acceleration
What to check
- Check connector pins
- Measure signal at idle
- Inspect intake for leaks
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0102, follow the service information for that make and model.
Related codes
- P0100 Mass or Volume Air Flow Circuit
- P0101 Mass or Volume Air Flow Circuit Range/Performance
- 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