Mass Air Flow Sensor — Nissan Gravite

Category: Fuel System | Severity: medium | Cost: ₹3,000–₹12,000

What is Mass Air Flow Sensor?

Measures the amount of air entering the engine.

How Mass Air Flow Sensor Works

Uses a heated wire to detect airflow and sends data to ECU.

Why is Mass Air Flow Sensor Important?

Ensures proper air-fuel mixture.

Common Problems

Dirty sensor
Sensor failure

Symptoms

Rough idle
Poor acceleration
Black smoke

Causes of Failure

Dust buildup
Electrical faults

Impact on Car Performance

Incorrect readings lead to poor fuel efficiency.

DIY Fix Guide — Step by Step

Clean sensor with MAF cleaner
Check wiring
Replace if faulty

Maintenance Tips

Clean periodically
Use clean air filters

Replacement Cost in India

Estimated range: ₹3,000 – ₹12,000

Where to Buy Online

When to Replace Mass Air Flow Sensor

Replace when cleaning does not fix issues.