Knock Sensor for Hyundai Creta — Price, Symptoms & Replacement Guide
Category: Electrical | Failure Severity: High | Replacement Cost in India: ₹2,000–₹6,000
What is the Knock Sensor?
Detects engine knocking (abnormal combustion) and helps the ECU adjust ignition timing.
How the Knock Sensor Works
Uses piezoelectric elements to detect vibrations caused by knocking and sends signals to ECU.
Why the Knock Sensor is Important
Prevents engine damage due to detonation.
Common Problems with the Knock Sensor
- Sensor failure
- False readings
Warning Symptoms of a Failing Knock Sensor
- Engine knocking sound
- Reduced power
- Check engine light
Common Causes of Knock Sensor Failure
- Heat exposure
- Aging
Impact on Car Performance
Can cause engine damage if not addressed.
DIY Fix Guide — Step by Step
- Locate on engine block
- Disconnect wiring
- Replace sensor
Maintenance Tips
- Use quality fuel
- Avoid overheating
Knock Sensor Replacement Cost in India
Expect to pay between ₹2,000 and ₹6,000 for genuine parts plus labour at an authorised Hyundai workshop. Local garages and aftermarket parts can be 20–40% cheaper but may compromise warranty.
Where to Buy Knock Sensor Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade Knock Sensor listings.
When to Replace the Knock Sensor
On failure