Fuel Composition Sensor — Maruti Suzuki Swift
Category: Fuel System | Severity: low | Cost: ₹8,000–₹20,000
What is Fuel Composition Sensor?
Detects ethanol content in fuel (used in flex-fuel systems).
How Fuel Composition Sensor Works
Analyzes fuel mixture and sends data to ECU.
Why is Fuel Composition Sensor Important?
Ensures proper combustion in flex-fuel engines.
Common Problems
- Sensor malfunction
Symptoms
- Engine misfire
- Starting issues
Causes of Failure
- Sensor damage
- Fuel impurities
Impact on Car Performance
Incorrect fuel calibration.
DIY Fix Guide — Step by Step
- Scan ECU
- Replace sensor
Maintenance Tips
- Use recommended fuel
Replacement Cost in India
Estimated range: ₹8,000 – ₹20,000
Where to Buy Online
When to Replace Fuel Composition Sensor
When flex-fuel errors appear.