P0101moderate severityPowertrain
Mass Air Flow (MAF) Circuit Range/Performance
on 2001 Audi A6 3.0L V6 · AWD
What this code means
The MAF sensor reading is outside the expected range for the current engine operating conditions.
Symptoms
- Check Engine Light
- Poor fuel economy
- Hesitation
- Rough idle
- Stalling
Common causes
- Dirty MAF sensor
- Intake air leak
- Restricted air filter
- Faulty MAF sensor
- Exhaust leak near O2 sensor
Diagnostic steps
- Compare MAF reading to spec at idle and 2500 RPM
- Check for vacuum leaks
- Inspect air filter
- Clean MAF sensor
- Check for exhaust leaks
Repair notes
Clean or replace MAF sensor. Repair any intake leaks.
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