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P0101: Mass or Volume Air Flow Circuit Range/Performance
Severity: Medium Drive gently and get it diagnosed soon.
What does P0101 mean?
The MAF sensor's reading does not match what the computer expects based on other sensors like throttle position and RPM. Often caused by a dirty sensor or an air leak.
Generic OBD-II definition: Mass or Volume Air Flow Circuit Range/Performance. Confirm applicability in your vehicle service information.
Common causes
- Dirty MAF sensor element
- Air leak between the MAF and throttle body
- Damaged MAF wiring or connector
- Failed MAF sensor
- Clogged air filter
Symptoms
- Hesitation or stumbling
- Rough idle
- Stalling
- Poor fuel economy
Can I keep driving with P0101?
Severity: Medium Drive gently and get it diagnosed soon.
If the check engine light is flashing or the car runs badly, stop driving and have it checked.
Typical fixes
- Inspect the intake duct for cracks and loose clamps
- Clean the MAF with MAF-specific cleaner
- Check the connector and wiring
- Replace the sensor if readings stay out of range