Oxygen Sensor — Audi Q5
Category: Engine | Severity: medium | Cost: ₹3,000–₹15,000
What is Oxygen Sensor?
Oxygen sensor measures oxygen levels in exhaust gases.
How Oxygen Sensor Works
It sends data to ECU to adjust fuel mixture.
Why is Oxygen Sensor Important?
Ensures optimal combustion and emission control.
Common Problems
- Sensor failure
- Slow response
Symptoms
- Check engine light
- Poor mileage
Causes of Failure
- Contamination
- Wear
Impact on Car Performance
Leads to inefficient fuel combustion.
DIY Fix Guide — Step by Step
- Scan ECU codes
- Inspect wiring
- Replace faulty sensor
Maintenance Tips
- Regular diagnostics
Replacement Cost in India
Estimated range: ₹3,000 – ₹15,000
Where to Buy Online
When to Replace Oxygen Sensor
When faulty or error codes appear.