Oxygen Sensor (O2 Sensor) — Tata Motors Punch

Category: Exhaust | Severity: high | Cost: ₹2,000–₹6,000

What is Oxygen Sensor (O2 Sensor)?

Measures oxygen level in exhaust gases.

How Oxygen Sensor (O2 Sensor) Works

Sends data to ECU for air-fuel mixture adjustment.

Why is Oxygen Sensor (O2 Sensor) Important?

Optimizes fuel efficiency and emissions.

Common Problems

Sensor failure

Symptoms

Check engine light
Poor mileage

Causes of Failure

Carbon buildup
Sensor aging

Impact on Car Performance

Reduced mileage and performance.

DIY Fix Guide — Step by Step

Replace sensor

Maintenance Tips

Use good quality fuel

Replacement Cost in India

Estimated range: ₹2,000 – ₹6,000

Where to Buy Online

When to Replace Oxygen Sensor (O2 Sensor)

After 60,000–80,000 km or failure.