Oxygen Sensor — Aston Martin DB12
Category: Exhaust | Severity: high | Cost: ₹15,000–₹60,000
What is Oxygen Sensor?
Monitors oxygen levels in exhaust gases to optimize air-fuel mixture.
How Oxygen Sensor Works
Sends real-time data to ECU, which adjusts fuel injection for efficient combustion.
Why is Oxygen Sensor Important?
Critical for fuel efficiency, emissions, and engine performance.
Common Problems
- Sensor failure
- Carbon buildup
- Slow response
Symptoms
- Check engine light
- Poor mileage
- Rough engine performance
Causes of Failure
- Contamination
- High mileage wear
- Fuel quality issues
Impact on Car Performance
Incorrect air-fuel mixture leading to reduced efficiency and higher emissions.
DIY Fix Guide — Step by Step
- Scan OBD codes
- Inspect wiring
- Replace faulty sensor
Maintenance Tips
- Use high-quality fuel
- Regular engine tuning
Replacement Cost in India
Estimated range: ₹15,000 – ₹60,000
Where to Buy Online
When to Replace Oxygen Sensor
When ECU error codes indicate failure or performance drops.