4 min read Jul 10, 2024

04466-0A010: Hyundai/Kia Engine Control Module

The 04466-0A010 is an Engine Control Module (ECM) used in various Hyundai and Kia vehicles. This module is responsible for controlling and regulating the engine's performance, ensuring smooth and efficient operation.


The 04466-0A010 ECM is a computer-controlled unit that receives input from various sensors and sends output signals to different engine components. Its primary functions include:

Fuel Injection

The ECM controls the fuel injection system, ensuring the correct amount of fuel is injected into the engine's cylinders at the right time. This results in optimal engine performance, fuel efficiency, and reduced emissions.

Ignition Timing

The module regulates the ignition timing, ensuring that the spark plugs fire at the correct time to achieve efficient combustion and minimize engine knocking or pinging.

Engine Speed and Load

The ECM monitors the engine's speed and load, adjusting the fuel injection and ignition timing accordingly. This ensures that the engine performs optimally under various driving conditions.

Emissions Control

The module is designed to reduce emissions by controlling the air-fuel mixture, exhaust gas recirculation, and catalytic converter operation.


The 04466-0A010 ECM is compatible with various Hyundai and Kia models, including:

Hyundai Models

  • Elantra (2007-2010)
  • Sonata (2006-2010)
  • Santa Fe (2007-2012)

Kia Models

  • Rio (2006-2011)
  • Spectra (2004-2009)
  • Sorento (2007-2011)


If your vehicle's engine is experiencing issues, it's essential to diagnose the problem correctly to avoid replacing the ECM unnecessarily. Common symptoms of a faulty ECM include:

Check Engine Light

The check engine light on the dashboard may illuminate, indicating a problem with the ECM or another engine component.

Poor Engine Performance

The engine may stumble, hesitate, or experience misfires, leading to decreased performance and fuel efficiency.

Faulty Sensor Readings

Incorrect sensor readings can cause the ECM to malfunction, resulting in poor engine performance or failure.


The 04466-0A010 ECM is a critical component in Hyundai and Kia vehicles, responsible for regulating the engine's performance and emissions. If you suspect a problem with your vehicle's ECM, it's essential to diagnose the issue correctly to avoid costly repairs. Consult a professional mechanic or the vehicle's repair manual for guidance on replacing the ECM.

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