Mass Airflow Sensor (MAF) — Audi Q7
Category: Engine | Severity: medium | Cost: ₹5,000–₹20,000
What is Mass Airflow Sensor (MAF)?
The MAF sensor measures the amount of air entering the engine.
How Mass Airflow Sensor (MAF) Works
It sends airflow data to ECU for proper fuel injection calculation.
Why is Mass Airflow Sensor (MAF) Important?
Ensures correct air-fuel ratio for performance and efficiency.
Common Problems
- Dirty sensor
- Sensor failure
Symptoms
- Engine hesitation
- Poor acceleration
- Check engine light
Causes of Failure
- Dust accumulation
- Oil contamination
Impact on Car Performance
Incorrect readings affect engine performance and mileage.
DIY Fix Guide — Step by Step
- Clean sensor using MAF cleaner
- Check wiring
- Scan ECU codes
- Replace if faulty
- Avoid touching sensor element
Maintenance Tips
- Replace air filter regularly
- Keep intake clean
Replacement Cost in India
Estimated range: ₹5,000 – ₹20,000
Where to Buy Online
When to Replace Mass Airflow Sensor (MAF)
Replace if cleaning does not fix the issue.