Oxygen Sensor (O2 Sensor) — Renault Duster

Category: Exhaust | Severity: high | Cost: ₹3,000–₹12,000

What is Oxygen Sensor (O2 Sensor)?

Measures oxygen levels in exhaust gases to optimize air-fuel mixture.

How Oxygen Sensor (O2 Sensor) Works

Sends real-time data to ECU for adjusting fuel injection.

Why is Oxygen Sensor (O2 Sensor) Important?

Ensures optimal combustion and emission control.

Common Problems

Sensor failure
Carbon buildup

Symptoms

Poor mileage
Check engine light
Rough idling

Causes of Failure

Contamination
Wear over time

Impact on Car Performance

Faulty sensor reduces fuel efficiency and increases emissions.

DIY Fix Guide — Step by Step

Scan OBD codes
Inspect wiring
Replace faulty sensor

Maintenance Tips

Use quality fuel
Periodic diagnostics scan

Replacement Cost in India

Estimated range: ₹3,000 – ₹12,000

Where to Buy Online

When to Replace Oxygen Sensor (O2 Sensor)

Every 80,000–100,000 km or when faulty.