Engine Control Unit (ECU) — Renault Duster

Category: Fuel System | Severity: high | Cost: ₹15,000–₹50,000

What is Engine Control Unit (ECU)?

The central computer that manages fuel injection, ignition timing, and engine performance.

How Engine Control Unit (ECU) Works

Receives data from sensors and adjusts fuel-air mixture and timing accordingly.

Why is Engine Control Unit (ECU) Important?

Critical for engine efficiency, emissions, and performance.

Common Problems

Software glitches
Sensor communication failure

Symptoms

Check engine light
Poor performance
Starting issues

Causes of Failure

Electrical faults
Water damage

Impact on Car Performance

Incorrect ECU signals can severely impact engine performance.

DIY Fix Guide — Step by Step

Scan for error codes
Check wiring
Reset ECU

Maintenance Tips

Avoid water exposure
Regular diagnostics

Replacement Cost in India

Estimated range: ₹15,000 – ₹50,000

Where to Buy Online

When to Replace Engine Control Unit (ECU)

Replace if ECU fails or cannot be reprogrammed.