16486moderate severityPowertrain
Mass or Volume Air Flow Circuit Low Input
on 2004 Audi A4 3.0L V6 · AWD
What this code means
The MAF sensor is reporting airflow signal too low (OBD P0102). This is often caused by a dirty sensor or intake leak.
Symptoms
- Rough idle
- Hesitation on acceleration
- Reduced power
Common causes
- Dirty or contaminated MAF sensor
- Air intake leak
- Faulty MAF sensor
- Wiring or connector fault
Diagnostic steps
- Inspect MAF sensor for contamination
- Check intake ducting for leaks
- Read live MAF airflow data
- Test MAF signal and power wiring
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