Oxygen Sensor — Toyota Fortuner Legender

Category: Exhaust | Severity: medium | Cost: ₹5,000–₹15,000

What is Oxygen Sensor?

Measures oxygen levels in exhaust gases.

How Oxygen Sensor Works

Sends data to ECU to adjust air-fuel ratio.

Why is Oxygen Sensor Important?

Optimizes fuel efficiency and emissions.

Common Problems

Symptoms

Causes of Failure

Impact on Car Performance

Reduced fuel efficiency and higher emissions.

DIY Fix Guide — Step by Step

Maintenance Tips

Replacement Cost in India

Estimated range: ₹5,000 – ₹15,000

Where to Buy Online

    When to Replace Oxygen Sensor

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