NOx Sensor for Renault Duster — Price, Symptoms & Replacement Guide
Category: Exhaust | Failure Severity: High | Replacement Cost in India: ₹15,000–₹40,000
What is the NOx Sensor?
Measures nitrogen oxide levels in exhaust gases for emission control.
How the NOx Sensor Works
Detects NOx concentration and sends data to ECU for SCR optimization.
Why the NOx Sensor is Important
Critical for BS6 emission compliance in diesel engines.
Common Problems with the NOx Sensor
- Sensor failure
- Incorrect readings
Warning Symptoms of a Failing NOx Sensor
- Warning light
- Emission failure
Common Causes of NOx Sensor Failure
- Contamination
- Electrical faults
Impact on Car Performance
Leads to high emissions and possible limp mode.
DIY Fix Guide — Step by Step
- Scan error codes
- Inspect sensor wiring
- Replace faulty unit
Maintenance Tips
- Use proper DEF
- Avoid contamination
NOx Sensor Replacement Cost in India
Expect to pay between ₹15,000 and ₹40,000 for genuine parts plus labour at an authorised Renault workshop. Local garages and aftermarket parts can be 20–40% cheaper but may compromise warranty.
Where to Buy NOx Sensor Online
Search trusted Indian car-parts retailers like Boodmo, Amazon India and Flipkart for genuine and OEM-grade NOx Sensor listings.
When to Replace the NOx Sensor
When sensor fails or gives incorrect readings.