Mass Airflow Sensor (MAF) for BMW 5 Series — Price, Symptoms & Replacement Guide
Category: Engine | Failure Severity: Medium | Replacement Cost in India: ₹5,000–₹20,000
What is the Mass Airflow Sensor (MAF)?
The MAF sensor measures the amount of air entering the engine.
How the Mass Airflow Sensor (MAF) Works
It sends data to ECU to adjust fuel injection.
Why the Mass Airflow Sensor (MAF) is Important
Ensures optimal air-fuel ratio.
Common Problems with the Mass Airflow Sensor (MAF)
- Dirty sensor
- Failure
Warning Symptoms of a Failing Mass Airflow Sensor (MAF)
- Rough idle
- Poor mileage
- Check engine light
Common Causes of Mass Airflow Sensor (MAF) Failure
- Dust contamination
- Electrical issues
Impact on Car Performance
Incorrect readings affect fuel efficiency.
DIY Fix Guide — Step by Step
- Clean MAF sensor
- Check wiring
- Scan ECU
- Replace if faulty
Maintenance Tips
- Keep air filter clean
- Regular cleaning
Mass Airflow Sensor (MAF) Replacement Cost in India
Expect to pay between ₹5,000 and ₹20,000 for genuine parts plus labour at an authorised BMW workshop. Local garages and aftermarket parts can be 20–40% cheaper but may compromise warranty.
Where to Buy Mass Airflow Sensor (MAF) Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade Mass Airflow Sensor (MAF) listings.
When to Replace the Mass Airflow Sensor (MAF)
Replace when faulty or unresponsive.