Selective Catalytic Reduction (SCR) Catalyst — Maruti Suzuki Swift

Category: Exhaust | Severity: high | Cost: ₹30,000–₹80,000

What is Selective Catalytic Reduction (SCR) Catalyst?

Reduces NOx emissions using AdBlue (DEF).

How Selective Catalytic Reduction (SCR) Catalyst Works

Injects DEF into exhaust, converting NOx into nitrogen and water.

Why is Selective Catalytic Reduction (SCR) Catalyst Important?

Essential in diesel engines for BS6 compliance.

Common Problems

Symptoms

Causes of Failure

Impact on Car Performance

Engine enters limp mode.

DIY Fix Guide — Step by Step

Maintenance Tips

Replacement Cost in India

Estimated range: ₹30,000 – ₹80,000

Where to Buy Online

    When to Replace Selective Catalytic Reduction (SCR) Catalyst

    When NOx levels are high or system fails.