Electronic Control Unit (ECU)

Published: 2021-12-28, Modified: 2025-11-21

An Electronic Control Unit (ECU) is an embedded system that controls one or more of the electrical systems or subsystems in a vehicle. While the acronym ECU originally stood for Engine Control Unit, its meaning has expanded with the increasing number of electronic modules in modern vehicles. Today, it is more commonly used as a general term for any electronic control unit.

Examples of Electronic Control Units

• Hybrid control ECU
• Gateway ECU
• Gas fuel engine control ECU
• Stop/start control ECU
• Transmission control ECU
• Airbag control ECU
• Power steering control ECU
• Engine control ECU

• Learn more about the Engine Control Unit (ECU).

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