Oxygen Sensor (O2 Sensor) — MG Motor Majestor
Category: Engine | Severity: medium | Cost: ₹2,000–₹12,000
What is Oxygen Sensor (O2 Sensor)?
Measures oxygen levels in exhaust gases.
How Oxygen Sensor (O2 Sensor) Works
Helps ECU adjust fuel-air mixture.
Why is Oxygen Sensor (O2 Sensor) Important?
Ensures emission control and fuel efficiency.
Common Problems
- Failure
- Contamination
Symptoms
- Check engine light
- Poor mileage
Causes of Failure
- Carbon buildup
- Age
Impact on Car Performance
Leads to higher emissions and fuel consumption.
DIY Fix Guide — Step by Step
- Scan ECU
- Replace sensor
Maintenance Tips
- Use clean fuel
Replacement Cost in India
Estimated range: ₹2,000 – ₹12,000
Where to Buy Online
When to Replace Oxygen Sensor (O2 Sensor)
Replace when sensor fails or mileage drops.