P0100 Mass or Volume Air Flow Circuit
The engine computer sees an electrical problem in the mass air flow (MAF) sensor circuit.
Common causes
- Faulty MAF sensor
- Damaged wiring or connector
- Air leak after the sensor
Symptoms
- Check engine light
- Hesitation
- Rough idle
- Poor fuel economy
What to check
- Inspect the connector
- Check sensor supply voltage and ground
- Look for intake leaks between sensor and throttle
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0100, follow the service information for that make and model.
Related codes
- P0101 Mass or Volume Air Flow Circuit Range/Performance
- 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